Question

sin2thets=cos2theta,theta=?​

Answer 1

Answer:

22.5

Step-by-step explanation:

$\sin(2 \alpha ) = \cos(2 \alpha ) \\ \cos(90 - 2 \alpha ) = \cos( 2\alpha ) \\ 90 - 2 \alpha = 2 \alpha \\ 4 \alpha = 90 \\ \alpha = 22.5$