Math, asked by Kausha726, 9 months ago

Is it right to say cos ( 60
+ 30 ) = cos 60
. cos 30
- sin 60
. sin 30
. Justify your answer.

Answers

Answered by abhishek143sin

1

Answer:

yes becz it is in form of

cos(A+B)=cosA.cosB-sinA.sinB

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