Math, asked by dharshinipanneer431, 8 months ago

Prove that cos 30o

. cos 60o

- sin 30o

. sin 60o = 0

Answers

Answered by sachitra59

3

Step-by-step explanation:

cos30.cos60-sin30.sin60

=sin60.sin30-cos30.cos60. [sin30=cos60,sin60=cos30]

=0

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