Question

How do i solve this?: 2 sin^2y = 5 -2 cos^2y

Answer 1

Use the identity \(\large\sin^2\theta+\cos^2\theta=1\) :)
@douglaswinslowcooper will lead you :)

Answer 2

Recall that sin^2 + cos^2 = 1

Answer 3

Unfortunately, that leads to 2 = 5, wrong. Re-check question.

Answer 4

@missannemarie10 no solution
BTW welcome to OS :D