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

JEE/Engineering Exams
Maths
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( 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} ]
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