Prove that: sin^2(2π/5) - sin^2(π/3) = (√5 - 1)/8 - Sarthaks eConnect | Largest Online Education Community
![SOLVED: Find the exact value of sin(5pi/8) by using the formulas (sum and difference, half angle, double angle) SOLVED: Find the exact value of sin(5pi/8) by using the formulas (sum and difference, half angle, double angle)](https://cdn.numerade.com/ask_previews/c0224936-fae0-494f-84fa-64a81f0f32f9_large.jpg)
SOLVED: Find the exact value of sin(5pi/8) by using the formulas (sum and difference, half angle, double angle)
![prove that, sin2(2pi/7) + sin2(3pi/14) + sin2(11pi/14) + sin2(5pi/7) = 2 - Maths - Trigonometric Functions - 15066307 | Meritnation.com prove that, sin2(2pi/7) + sin2(3pi/14) + sin2(11pi/14) + sin2(5pi/7) = 2 - Maths - Trigonometric Functions - 15066307 | Meritnation.com](https://s3mn.mnimgs.com/img/shared/content_ck_images/ck_43684298bc70078c5977fce9a6bd0f8f.png)
prove that, sin2(2pi/7) + sin2(3pi/14) + sin2(11pi/14) + sin2(5pi/7) = 2 - Maths - Trigonometric Functions - 15066307 | Meritnation.com
The value of sin^2 pi/8 + sin^2 3pi/8 + sin^2 5pi/8 + sin^2 7pi/8 is (1) 2 ( 2) 0 (3) 1 (4) none of these - Sarthaks eConnect | Largest Online Education Community
![Evalute : ` "sin"^(2)(pi)/(4) + "cos"^(2) (3pi)/(4)+"cos"^(2)(5pi)/(4)+"sin "^(2)(7pi)/(4).` - YouTube Evalute : ` "sin"^(2)(pi)/(4) + "cos"^(2) (3pi)/(4)+"cos"^(2)(5pi)/(4)+"sin "^(2)(7pi)/(4).` - YouTube](https://i.ytimg.com/vi/f_89jlw8vkU/maxresdefault.jpg)
Evalute : ` "sin"^(2)(pi)/(4) + "cos"^(2) (3pi)/(4)+"cos"^(2)(5pi)/(4)+"sin "^(2)(7pi)/(4).` - YouTube
![How to prove that [math]2\sin\left(\frac{5\pi}{12}\right)\sin\left(\frac{\pi }{12}\right)=\frac{1}{2}[/math] - Quora How to prove that [math]2\sin\left(\frac{5\pi}{12}\right)\sin\left(\frac{\pi }{12}\right)=\frac{1}{2}[/math] - Quora](https://qph.cf2.quoracdn.net/main-qimg-0816adfe5a34beedf46e60fe8077204e.webp)
How to prove that [math]2\sin\left(\frac{5\pi}{12}\right)\sin\left(\frac{\pi }{12}\right)=\frac{1}{2}[/math] - Quora
![SOLVED: 1. cos 5pi/4 = exact, text 2. sin 3pi/2= exact number 3. cos 4pi/3 = exact number 4. tan 3pi/4 = exact number 5. tan 11pi/6 = rounded to 3 decimals 6. degree mode csc199 = rounded to 3 decimals SOLVED: 1. cos 5pi/4 = exact, text 2. sin 3pi/2= exact number 3. cos 4pi/3 = exact number 4. tan 3pi/4 = exact number 5. tan 11pi/6 = rounded to 3 decimals 6. degree mode csc199 = rounded to 3 decimals](https://cdn.numerade.com/ask_previews/0cd02100-0640-4681-a0c6-bf0d0b302d24_large.jpg)
SOLVED: 1. cos 5pi/4 = exact, text 2. sin 3pi/2= exact number 3. cos 4pi/3 = exact number 4. tan 3pi/4 = exact number 5. tan 11pi/6 = rounded to 3 decimals 6. degree mode csc199 = rounded to 3 decimals
![साबित करें कि `sin. ( pi)/(5) sin . ( 2pi)/(5) sin . ( 3pi)/( 5) sin . ( 4pi)/( 5) =(5)/( 16)` - YouTube साबित करें कि `sin. ( pi)/(5) sin . ( 2pi)/(5) sin . ( 3pi)/( 5) sin . ( 4pi)/( 5) =(5)/( 16)` - YouTube](https://i.ytimg.com/vi/NKcps3NmVPw/maxresdefault.jpg)