Question

prove that,
sin^2(2pi/7)+sin^2(3pi/14)+sin^2(11pi/14)+sin^2(5pi/7)=2
Pl answer it fast.....

Answer 1

Answer:

So, Pls take a picture of ur answer to make it easy to answer

Sin²(2π/7) + Sin²(3π/14) + Sin²(11π/14) + sin²(5π/7) = 2

Put the Value of π to solve