Sin 75 degrees in fraction - Formula for compound angles of sine, cosine and tangent trigonometric ratios are given as follows: We are supposed to find the value of sin 75°. 75 can also be written as 30 + 45. We will apply trigonometric ratios of compound angles. We know that sin 30° = $\dfrac {1} {2}$, cos 45° = sin 45° = $\dfrac {1} {\sqrt {2}}$ and cos 30 ...

 
Answer: sin (22°) = 0.3746065934. Note: angle unit is set to degrees. Use our sin (x) calculator to find the sine of 22 degrees - sin (22 °) - or the sine of any angle in degrees and in radians.. Joliet hersld news

Solution : The value of sin 75 degrees is 3 + 1 2 2. Proof : We will write sin 75 as sin (45 + 30). By using formula sin (A + B) = sin A cos B + cos A sin B, Increased Offer! Hilton No Annual Fee 70K + Free Night Cert Offer! Hilton Grand Vacations has a new timeshare offer. You can get a three night stay and 50,000 Hilton Honors points ...Use some half angle formulas: #sin(theta/2) = +-sqrt((1-cos theta) / 2)# #cos(theta/2) = +-sqrt((1+cos theta) / 2)# Also use a known value #cos 30^o = sqrt(3)/2#. If we stick to the first quadrant, we can take the sign of the square root to be #+# in both cases.. #cos 15^o = sqrt((1+cos 30^o)/2)#For sin 20 degrees, the angle 20° lies between 0° and 90° (First Quadrant ). Since sine function is positive in the first quadrant, thus sin 20° value = 0.3420201. . . Since the sine function is a periodic function, we can represent sin 20° as, sin 20 degrees = sin (20° + n × 360°), n ∈ Z. ⇒ sin 20° = sin 380° = sin 740°, and so on.We convert degrees to radians because radians provide a more natural and consistent unit for measuring angles in mathematical calculations and trigonometric functions. Is 180 equivalent to 2π? 180 degrees is equivalent to π radians, 360 degress is equivalent to 2π.Read all about Singapore Changi Airport (SIN) here as TPG brings you all related news, deals, reviews and more. Singapore Changi Airport is one of the largest transportation hubs i...tan (75°) = 3.7320508076. tan (75°) is exactly: 2 + √3. Note: angle unit is set to degrees. Use our tan (x) calculator to find the exact value of tangent of 75 degrees - tan (75 °) - or the tangent of any angle in degrees and in radians.a unit of plane angular measurement that is equal to the angle at the center of a circle subtended by an arc whose length equals the radius or approximately 180°/π ~ 57.3 degrees. secant. the length of the hypotenuse divided by the length of the adjacent side. Also equals 1/cos (θ) sin. sin (θ) is the ratio of the opposite side of angle θ ...Free Fractions calculator - Add, Subtract, Reduce, Divide and Multiply fractions step-by-stepTranscript. Example 11 Find the value of sin 15°. sin 15° = sin (45° – 30°) = sin 45° cos 30° – cos 45° sin 30° = 1/√2 × √3/2 −1/√2 × 1/2 = 1/√2 ((√3 − 1)/2) = (√𝟑 − 𝟏)/(𝟐√𝟐)Order of Operations Factors & Primes Fractions Long Arithmetic Decimals Exponents & Radicals Ratios & Proportions Percent ... Roman Numerals Radical to Exponent Exponent to Radical To Fraction To Decimal To Mixed Number To Improper Fraction Radians to Degrees Degrees to Radians Hexadecimal Scientific Notation Distance ... \sin (75)\cos …Learn how to calculate the value of sin 75° using the formula sin (A + B) = sin A cos B + cos A sin B. See the step-by-step solution and similar questions on trigonometric ratios.Sin 30° = opposite side/hypotenuse side. We know that, Sin 30° = BD/AB = a/2a = 1 / 2. Therefore, Sin 30 degree equals to the fractional value of 1/ 2. Sin 30° = 1 / 2. Therefore, sin 30 value is 1/2. In the same way, we can derive other values of sin degrees like 0°, 30°, 45°, 60°, 90°,180°, 270° and 360°.Sin 150 degrees is the value of sine trigonometric function for an angle equal to 150 degrees. Understand methods to find the value of sin 150 degrees with examples and FAQs. ... Sin 150° in fraction: 1/2; Sin (-150 degrees):-0.5; Sin 150° in radians: sin (5π/6) or sin ... Using the sin 2a formula, 2 sin 75° cos 75° = sin(2 × 75°) ...This handbook will help you plan your study time, beat procrastination, memorise the info and get your notes in order. 8 study hacks, 3 revision templates, 6 revision techniques, 10 exam and self-care tips.Sep 11, 2023 · In this video we are converting a degree into a fraction. In this video the fractions are not being simplified in lowest term.DEGREE CONVERSION PLAYLISThttps... Jun 5, 2023 · The sine of an angle is the length of the opposite side divided by the length of the hypotenuse with the assumption that the angle is acute (. 0 ° < α < 90 °. \small0\degree < \alpha < 90\degree 0° < α < 90° or. 0 < α < π / 2. \small0 < \alpha < \pi/2 0 < α < π/2 ). The other sine definition is based on the unit circle. Free trigonometric equation calculator - solve trigonometric equations step-by-step.Find the Exact Value sin(75 degrees ) Step 1. Split into two angles where the values of the six trigonometric functions are known. Step 2. Apply the sum of angles ...degrees/360 = fraction. 75/360 = 5/24. 75 degrees = 5/24. Below is an illustration showing you what 75 degrees and 5/24 of a circle looks like. To create the illustration above showing you 75 degrees, we first drew a circle and then drew two lines from the center, separated by 75 degrees. The slice that the two lines create inside the circle is ...To find the value of tan 75 degrees using the unit circle: Rotate ‘r’ anticlockwise to form 75° angle with the positive x-axis. The tan of 75 degrees equals the y-coordinate (0.9659) divided by x-coordinate (0.2588) of the point of intersection (0.2588, 0.9659) of unit circle and r. Hence the value of tan 75° = y/x = 3.7321 (approx).First, split the angle into two angles where the values of the six trigonometric functions are known. In this case, 75 75 can be split into 30 +45 30 + 45. sin(30+45) sin ( 30 + 45) Use the sum formula for sine to simplify the expression. The formula states that sin(A+B) = sin(A)cos(B)+cos(A)sin(B) sin ( A + B) = sin ( A) cos ( B) + cos ( A ...The seven deadly sins, or cardinal sins as they’re also known, are a group of vices that often give birth to other immoralities, which is why they’re classified above all others. T...Learn how to find the value of sin 75 degrees in decimal, fraction and radians using trigonometric functions and unit circle. See examples of using sin 75 degrees in trigonometric identities and equations.Roman Numerals Radical to Exponent Exponent to Radical To Fraction To Decimal To Mixed Number To Improper Fraction Radians to Degrees Degrees to Radians Hexadecimal Scientific Notation Distance Weight Time Volume. Topic. Pre Algebra; ... \sin (x)+\sin (\frac{x}{2})=0,\:0\le \:x\le \:2\pi ... The formula to convert radians to degrees: … Compute answers using Wolfram's breakthrough technology & knowledgebase, relied on by millions of students & professionals. For math, science, nutrition, history ... A radian is a unit of measurement for angles. It measures the size of an angle as the ratio of the length of the arc cut out by the angle on a circle, to the radius of the circle. One radian is approximately equal to 57.3 degrees. Answer: sin (75°) = 0.9659258263. sin (75°) is exactly: (√2/4) (√3 + 1) Note: angle unit is set to degrees. Use our sin (x) calculator to find the exact value of sine of 75 degrees - sin (75 °) - or the sine of any angle in degrees and in radians. The US government is set today to officially label Boko Haram, a Nigerian Islamist group, a ”foreign terrorist organization.” That means authorities would have the power to block f...For cosec 75 degrees, the angle 75° lies between 0° and 90° (First Quadrant ). Since cosecant function is positive in the first quadrant, thus cosec 75° value = √6 - √2 or 1.0352761. . . ⇒ cosec 75° = cosec 435° = cosec 795°, and so on. Note: Since, cosecant is an odd function, the value of cosec (-75°) = -cosec (75°).In this video, we are going to find the value of the sine of 75 degrees. Here, I have applied the identity sin(A + B) or sin(x + y).#sineof75 #sin75You can e...This video works to determine the exact value for the sine of 75 degrees in two different ways: using the sum formula for sine and using the half-angle ident...Sine and cosine are the fundamental trigonometric functions arising from the previous diagram:. The sine of theta (sin θ) is the hypotenuse's vertical projection (green line); andThe cosine of theta (cos θ) is the hypotenuse's horizontal projection (blue line).We can rotate the radial line through the four quadrants and obtain the values of the trig …Algebra. Fraction Calculator. Step 1: Enter the fraction you want to simplify. The Fraction Calculator will reduce a fraction to its simplest form. You can also add, subtract, multiply, and divide fractions, as well as, convert to a decimal and work with mixed numbers and reciprocals. We also offer step by step solutions.With the right music degree, you could be on the way to your dream job in the music business. Updated May 23, 2023 thebestschools.org is an advertising-supported site. Featured or ... Compute answers using Wolfram's breakthrough technology & knowledgebase, relied on by millions of students & professionals. For math, science, nutrition, history ... \sin (x)+\sin (\frac{x}{2})=0,\:0\le \:x\le \:2\pi \cos (x)-\sin (x)=0 ; 3\tan ^3(A)-\tan (A)=0,\:A\in \:\left[0,\:360\right] \sin (75)\cos (15) \sin (120) \csc (-\frac{53\pi }{6}) prove\:\tan^2(x) …sin 35° = 0.57358. sin 35 degrees = 0.57358. The sin of 35 degrees is 0.57358, the same as sin of 35 degrees in radians. To obtain 35 degrees in radian multiply 35° by π / 180° = 7/36 π. Sin 35degrees = sin (7/36 × π). Our results of sin35° have been rounded to five decimal places. If you want sine 35° with higher accuracy, then use ...Sine. Sine, written as sin⁡(θ), ... Below are 16 commonly used angles in both radians and degrees, along with the coordinates of their corresponding points on the unit circle. ... One method that may help with memorizing these values is to express all the values of sin(θ) as fractions involving a square root. Starting from 0° and ...Free Fractions calculator - Add, Subtract, Reduce, Divide and Multiply fractions step-by-stepLet us find the value of $\sin 75$ using the formula of the compound angles of sine functions. The following formula is the key to find sin 75 degree: sin(A+B) = sin A cos B + cos A sin B . Note that we can write sin 75 as follows: $\sin 75 = \sin(45 +30)$ Cos 15 Degrees. The value of cos 15 degrees is 0.9659258. . ..Cos 15 degrees in radians is written as cos (15° × π/180°), i.e., cos (π/12) or cos (0.261799. . .). In this article, we will discuss the methods to find the value of cos 15 degrees with examples. Trigonometry. Find the Exact Value sin (165) sin(165) sin ( 165) Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. sin(15) sin ( 15) Split 15 15 into two angles where the values of the six trigonometric functions are known. sin(45−30) sin ( 45 - 30) Separate negation.Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.Transcript. Ex 3.3, 5 Find the value of: sin 75° sin 75° = sin (45° + 30°) = sin 45° cos 30° + cos 45° sin 30° = 𝟏/√𝟐 × √𝟑/𝟐 + 𝟏/√𝟐 × 𝟏/𝟐 = 1/√2 (√3/2 " + " 1/2) = (√𝟑 + 𝟏)/ (𝟐√𝟐) Show More. Next: Ex 3.3, 5 (ii) → Go Ad-free. Chapter 3 Class 11 Trigonometric Functions.For sin 36 degrees, the angle 36° lies between 0° and 90° (First Quadrant ). Since sine function is positive in the first quadrant, thus sin 36° value = √ (10 - 2√5)/4 or 0.5877852. . . Since the sine function is a periodic function, we can represent sin 36° as, sin 36 degrees = sin (36° + n × 360°), n ∈ Z. ⇒ sin 36° = sin 396 ...Roman Numerals Radical to Exponent Exponent to Radical To Fraction To Decimal To Mixed Number To Improper Fraction Radians to Degrees ... -\sin^2(x)=\tan^2(x)\sin^2(x ...Explanation: For sin 5 degrees, the angle 5° lies between 0° and 90° (First Quadrant ). Since sine function is positive in the first quadrant, thus sin 5° value = 0.0871557. . . Since the sine function is a periodic function, we can represent sin 5° as, sin 5 degrees = sin (5° + n × 360°), n ∈ Z. ⇒ sin 5° = sin 365° = sin 725 ...Selfies are a sin, according to this cleric. A young Indonesian young cleric is taking a stand against selfies. In a 17- point manifesto posted on Twitter last week, popular Indone...From the above equations, we get sin 60 degrees exact value as √3/2. In the same way, we can find the values for cos and tan ratios. Therefore, the exact value of sin 60 degrees is √3/2. Cos 0° = Sin 90° = 1. Cos 30°= Sin 60° = √3/2. Cos 45° = Sin 45° = 1/√2. Cos 60° = Sin 30° =1/2.To find the value of sin 60 degrees using the unit circle: Rotate ‘r’ anticlockwise to form a 60° angle with the positive x-axis. The sin of 60 degrees equals the y-coordinate (0.866) of the point of intersection (0.5, 0.866) of unit circle and r. Hence the value of sin 60° = y = 0.866 (approx)First, calculate the sine of α by dividng the opposite side by the hypotenuse. This results in sin(α) = a / c = 52 / 60 = 0.8666. Use the inverse function with this outcome to calculate the angle α = arcsin(0.8666) = 60° (1.05 radians).Read all about Singapore Changi Airport (SIN) here as TPG brings you all related news, deals, reviews and more. Singapore Changi Airport is one of the largest transportation hubs i...Roman Numerals Radical to Exponent Exponent to Radical To Fraction To Decimal To Mixed Number To Improper Fraction Radians to Degrees ... \sin (75)\cos (15) \sin (120 ...The value of sin 195 degrees can be calculated by constructing an angle of 195° with the x-axis, and then finding the coordinates of the corresponding point (-0.9659, -0.2588) on the unit circle. The value of sin 195° is equal to the y-coordinate (-0.2588). ∴ sin 195° = -0.2588. Download FREE Study Materials.Roman Numerals Radical to Exponent Exponent to Radical To Fraction To Decimal To Mixed Number To Improper Fraction Radians to Degrees Degrees to Radians Hexadecimal ... \sin (75)\cos (15) \sin (120) ... Calculate trignometric equations, prove identities and evaluate functions step-by-step. trigonometry-calculator. 75 degrees exact …Find exact value of sin(15∘) with half-angle formula. Consider the half-angle formula for sine: sin(θ 2) = √ 1 − cosx 2. Since we know that 15 is half of 30, we can plug 30∘ in as θ and simplify: sin(15∘) = sin(30∘ 2) = √ 1 − cos(30∘) 2. = √ 1 − √3 2 2. = √ 2−√3 2 2. = √ 2 − √3 4. or see slightly more ...Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.Discover available jobs for individuals with engineering degrees, along with ways that a master degree, certification, and licensure can grow your career. Updated May 23, 2023 theb... Solution : The value of sin 75 degrees is 3 + 1 2 2. Proof : We will write sin 75 as sin (45 + 30). By using formula sin (A + B) = sin A cos B + cos A sin B, Answer: sin (56°) = 0.8290375726. Note: angle unit is set to degrees. Use our sin (x) calculator to find the sine of 56 degrees - sin (56 °) - or the sine of any angle in degrees and in radians.Compute answers using Wolfram's breakthrough technology & knowledgebase, relied on by millions of students & professionals. For math, science, nutrition, history ...a unit of plane angular measurement that is equal to the angle at the center of a circle subtended by an arc whose length equals the radius or approximately 180°/π ~ 57.3 degrees. secant. the length of the hypotenuse divided by the length of the adjacent side. Also equals 1/cos (θ) sin. sin (θ) is the ratio of the opposite side of angle θ ...We would like to show you a description here but the site won’t allow us.Trigonometry. Convert from Degrees to Radians 75 degrees. 75° 75 °. To convert degrees to radians, multiply by π 180° π 180 °, since a full circle is 360° 360 ° or 2π 2 π radians. 75°⋅ π 180° 75 ° ⋅ π 180 ° radians. Cancel the common factor of 15 15. Tap for more steps... 5⋅ π 12 5 ⋅ π 12 radians. Combine 5 5 and π 12 ...The US government is set today to officially label Boko Haram, a Nigerian Islamist group, a ”foreign terrorist organization.” That means authorities would have the power to block f...Apr 16, 2024 · Join Teachoo Black. What is value of sin 18 Let θ = 18° 5θ = 5 × 18° = 90° 2θ + 3θ = 90° 2θ = 90° – 3θ sin 2θ = sin (90° – 3θ) sin 2θ = cos 3θ 2 sin θ cos θ = 4 cos3 θ – 3 cos θ 2 sin θ cos θ – 4 cos3 θ + 3 cos θ = 0 cos θ (2 sin θ – 4 cos2 θ + 3) = 0 2 sin θ – 4 cos2 θ + 3 = 0 2 sin θ – 4 (1 – sin2. \sin (x)+\sin (\frac{x}{2})=0,\:0\le \:x\le \:2\pi \cos (x)-\sin (x)=0 ; 3\tan ^3(A)-\tan (A)=0,\:A\in \:\left[0,\:360\right] \sin (75)\cos (15) \sin (120) \csc (-\frac{53\pi }{6}) prove\:\tan^2(x)-\sin^2(x)=\tan^2(x)\sin^2(x) prove\:\cot(2x)=\frac{1-\tan^2(x)}{2\tan(x)} prove\:\csc(2x)=\frac{\sec(x)}{2\sin(x)} Show MoreAnswer: sin (60°) = 0.8660254038. sin (60°) is exactly: √3/2. Note: angle unit is set to degrees. Use our sin (x) calculator to find the exact value of sine of 60 degrees - sin (60 °) - or the sine of any angle in degrees and in radians.The value of sin 195 degrees can be calculated by constructing an angle of 195° with the x-axis, and then finding the coordinates of the corresponding point (-0.9659, -0.2588) on the unit circle. The value of sin 195° is equal to the y-coordinate (-0.2588). ∴ sin 195° = -0.2588. Download FREE Study Materials.From the above picture, sin, cos, or csc have a meaning for angles between 0 and 90 degrees (or between 0 and ... in turn, would require us to find sin(75°). For that ... The partial fraction decomposition calculator decomposes your rational expression with numerator and denominator up to degree 3 into partial fractions (if possibleMy Delano Las Vegas review goes over all of the ins and outs of one of the most underrated properties in sin city. A great Amex FHR option. Increased Offer! Hilton No Annual Fee 70...The formula to convert radians to degrees: degrees = radians * 180 / π What is cotangent equal to? The cotangent function (cot(x)), is the reciprocal of the tangent function.cot(x) = cos(x) / sin(x)Trigonometry is a branch of mathematics concerned with relationships between angles and side lengths of triangles. In particular, the trigonometric functions relate the angles of a right triangle with ratios of its side lengths. The field emerged in the Hellenistic world during the 3rd century BC from applications of geometry to astronomical ...Jul 15, 2015 · Find: sin 75 deg Answer: sin 75 = +- sqrt(2 + sqrt3)/2 Call sin 75 = sin t --> cos 150 = cos 2t On the trig unit circle, cos (150) = cos (180 - 30) = - cos 30 ... Tan (15 °) can be found if we know the value of sin 15 degrees and cos 15 degrees. The tangent of an angle is equal to the ratio of sine and cosine functions of the same angle, in the right angle triangle. Therefore, once we have found the values of sin 15 degrees and cos 15 degrees, we can easily find the corresponding tangent value.Trigonometry. Find the Exact Value sin (7.5) sin(7.5) sin ( 7.5) Rewrite 7.5 7.5 as an angle where the values of the six trigonometric functions are known divided by 2 2. sin(15 2) sin ( 15 2) Apply the sine half - angle identity. ±√ 1−cos(15) 2 ± 1 - cos ( 15) 2. Change the ± ± to + + because sine is positive in the first quadrant.Free math problem solver answers your trigonometry homework questions with step-by-step explanations.The rule for inverse sine is derived from the rule of sine function which is: a/sin⁡(A) = b/sin⁡(B) = c/sin⁡(C) Now, we’ll derive the rule for side a, the rule for the remaining sides will be exactly the same a/sin⁡(A) = k a = sin (A) k Taking sin-1 on both sides

Free math problem solver answers your trigonometry homework questions with step-by-step explanations.. Rockwall gold and silver pawn

sin 75 degrees in fraction

To find the value of sin 60 degrees using the unit circle: Rotate ‘r’ anticlockwise to form a 60° angle with the positive x-axis. The sin of 60 degrees equals the y-coordinate (0.866) of the point of intersection (0.5, 0.866) of unit circle and r. Hence the value of sin 60° = y = 0.866 (approx)Sine table. CalcItFast. Math Sine Calculator Sine Calculator. Trigonometric sine calculator. Sine rule. Sine table. Value. Angle Type ... Sine of 75.5 degrees Sine of 41 degrees Sine of 65 radians Sine of 59 degrees ... The sine is a trigonometric function of an angle, usually defined for acute angles within a right-angled triangle as the ratio of the length of the opposite side to the longest side of the triangle. In the illustration below, sin(α) = a/c and sin(β) = b/c. From cos(α) = a/c follows that the sine of any angle is always less than or equal to ... If you want to find the values of sine, cosine, tangent, and their reciprocal functions, use the first part of the calculator. ... For example, to find the value of sin(45°), we merely enter 45 degrees as the angle. The calculator instantly tells you that sin(45°) = 0.70710678. It also gives the values of other trig functions, such as cos(45 ...Arcsine is an inverse of the sine function. In other words, it helps to find the angle of a triangle that has a known value of sine: arcsin (x) = y iff x = sin (y) As sine's codomain for real numbers is [−1, 1] , we can only calculate arcsine for numbers in that interval. This means that the domain of arcsin (for real results) is -1 ≤ x ≤ 1.sin 75. Natural Language; Math Input ... Assuming trigonometric arguments in degrees | Use radians instead. Input. Exact result. Decimal approximation. More digits; Reference …sin (75 degree) Compute answers using Wolfram's breakthrough technology & knowledgebase, relied on by millions of students & professionals.as shown in the image to the right. Note that the denominator of a fraction cannot be 0, as it would make the fraction undefined. Fractions can undergo many different operations, some of which are mentioned below. Addition: Unlike adding and subtracting integers such as 2 and 8, fractions require a common denominator to undergo these operations.The sine of angle 45 degrees is written as sine of pi divided by four radians in circular system. So, the sine of π divided by 4 radians is equal to 1 divided by square root of 2 in fraction form and its value in decimal form is equal to 0.7071 approximately. sin. ⁡. ( …Free math problem solver answers your trigonometry homework questions with step-by-step explanations.Order of Operations Factors & Primes Fractions Long Arithmetic Decimals Exponents & Radicals Ratios & Proportions Percent ... Roman Numerals Radical to Exponent Exponent to Radical To Fraction To Decimal To Mixed Number To Improper Fraction Radians to Degrees Degrees to Radians Hexadecimal Scientific Notation Distance ... \sin (75)\cos …The sine formula is: sin (α) = opposite hypotenuse = a c. Thus, the sine of angle α in a right triangle is equal to the opposite side’s length divided by the hypotenuse. To find the ratio of sine, simply enter the length of the opposite and hypotenuse and simplify. For example, let’s calculate the sine of angle α in a triangle with the ...Simplify Using Half-Angle Formula sin(75) Step 1. Split into two angles where the values of the six trigonometric functions are known. Step 2. Apply the sum of angles identity. Step 3. The exact value of is . Step 4. The exact value of is . Step 5. The exact value of is . Step 6. The exact value of is . Step 7. Simplify .Feb 18, 2024 · Find the exact value of sin 150 degrees; ... How do I find the value of sin 150° in fraction form? ... ⇒ sin(75) + sin(15) = (sin45.cos30 + cos45.sin30) + (sin45 ... Answer: sin (120°) = 0.8660254038. sin (120°) is exactly: √3/2. Note: angle unit is set to degrees. Use our sin (x) calculator to find the exact value of sine of 120 degrees - sin (120 °) - or the sine of any angle in degrees and in radians. Sin 75 Degrees. If you want to know what is sin 75 degrees in terms of trigonometry, then navigate straight to the explanations in the next paragraph; what’s ahead in this section is the value of sin 75°: sin75° = (√6+√2)/4. sin 75° = (√6+√2)/4. sin 75 degrees = (√6+√2)/4. The sin of 75 degrees is (√6+√2)/4, the same as sin ....

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