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Find the value of cos 12^(@)+cos 84^(@)+...

Find the value of `cos 12^(@)+cos 84^(@)+cos 156^(@)+cos 132^(@)`

A

`1/2`

B

1

C

`-1/2`

D

`1/8`

Text Solution

Verified by Experts

The correct Answer is:
C
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TARGET PUBLICATION-FACTORIZATION FORMULAE-CRITICAL THINKING
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