Math, asked by manasmeher2002, 3 days ago

Value of cos (60-A) cos (30+A)-sin (60-A) sin (30+A) is?

Answers

Answered by bagkakali

0

Answer:

cos(60-A) cos (30+A)- sin(60-A) sin(30+A)

=cos (60-A+30+A)

=cos 90

=0

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