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Prove that cos 18^(@)-sin 18^(@)=sqrt(2)...

Prove that `cos 18^(@)-sin 18^(@)=sqrt(2)sin 27^(@)`

A

`sin 27^(@)`

B

`sqrt2 sin 27^(@)`

C

`cos 27^(@)`

D

`sqrt2 cos 27^(@)`

Text Solution

Verified by Experts

The correct Answer is:
B
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