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Prove that (cos 9^(@)+sin9^(@))/(cos9^(@...

Prove that `(cos 9^(@)+sin9^(@))/(cos9^(@)-sin9^(@)) = cot 36^(@)`.

Text Solution

Verified by Experts

The correct Answer is:
`tan (90^(@)- 36^(@))= cot 36^(@) =R.H.S`
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