Math, asked by miriyamvaishnavi20, 8 months ago

Prove that sin750°cos480°+cos120°cos60°=1/2

Answers

Answered by nidhi0987

1

I think this will help you.

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Answered by dhanushdhruva2004

0

Step-by-step explanation:

sin (2×360+30) cos((360+90)+30) +cos (180-120)cos60

=sin 30 cos(-30) +cos(-60) cos60

=(1/2) (-1/2) +(-1/2) (1/2)

=-1/4-1/4

=-1/2

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