Question

( sin 2 alpha=sin 2 B )
fin ( 2 alpha-sin 2 beta=0 )
( 2 cos (alpha+beta) sin (alpha-beta)=0 )
( Rightarrow quad ) Either ( cos (alpha+beta)=0 )
[
begin{aligned} sin (alpha-beta)=0 & gamma alpha=beta text { or } alpha+beta=90^{circ} end{aligned}
]

# [Multiple choice Ques] In Sin 2X= Sint B Then A) X+ B = 90 B) 2=B

Solution