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
![calculus - Is it possible to express $\sin \frac{\pi}{9}$ in terms of radicals? - Mathematics Stack Exchange calculus - Is it possible to express $\sin \frac{\pi}{9}$ in terms of radicals? - Mathematics Stack Exchange](https://i.stack.imgur.com/r8uHr.gif)
calculus - Is it possible to express $\sin \frac{\pi}{9}$ in terms of radicals? - Mathematics Stack Exchange
![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
![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)