Math, asked by rukminigontela, 1 month ago

solve sin(a+b) cos(a-b)+sin(a-b) cos (a+b)

Answers

Answered by nsvaggar

1

Step-by-step explanation:

RHS= (sin A+cos A) (sin B+cos B)

= sin A. sin B+sin A. cosB+cos A. sin B+cos A. cos B

= [sin A. cosB+cos A. sin B] +[cos A. cos B+sin A. sin B]

= sin (A+B) + cos (A-B)

= LHS

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