Is your equation ? If so then using the identity. So you have to solve therefore and .
I've tried to solve the equation 2cos^2x= sin 2x for 0 < x < pi
I know I have to express it in either sine or cos. And after that substitute by t and solve the quadratic equation. But I must be doing something wrong, because I keep getting the wrong I answer.
I would appreciate if you could solve and explain to me how it's solved
Thanks a lot,
Amine.