Math, asked by Lalit451, 1 year ago

prove the following:- sin(45+A).sin(45-A) =1/2cos2A

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Answered by khursheedahmad

To prove: sin (45° + a) × sin (45° - a) = 1/2
cos 2a
Proof:
LHS = sin (45° + a) × sin (45° - a)
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Answered by jk2523761

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