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Prove that (cos 9^(@)+ sin 9^(@))/(cos...

Prove that
`(cos 9^(@)+ sin 9^(@))/(cos 9^(@) -sin 9^(@)) = tan 54^(@)`

A

` tan 54^(@)`

B

` tan 36^(@)`

C

`tan 18^(@)`

D

`tan 73^(@)`

Text Solution

Verified by Experts

The correct Answer is:
A
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