https://www.askiitians.com/forums/Trigonometry/sinx-sin-2-x-1-what-is-the-value-of-sin-10-x-sin-8_104892.htm
sinx+sin2x=1what is the value of sin10 x+sin8 x+3(sin6 x+sin4 x)+sin2 - askIITians
sinx+sin2x=1what is the value of sin10 x+sin8 x+3(sin6 x+sin4 x)+sin2 x-1 sin8x (sin2x +1) +3sin4x(sin2x+1) +sin2x-1sin8x(1-sinx+1)+3sin4x(1-sinx+1)+1-sinx-1sin