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सिध्द कीजिए कि : (cos9^(@) + sin 9^(@))/...

सिध्द कीजिए कि : `(cos9^(@) + sin 9^(@))/(cos 9^(@) - sin 9^(@)) = tan 54^(@)`

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(cos9^(@) + sin 9^(@))/(cos9^(@) - sin9^(@))=

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

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(cos 9^@ + sin 9^@ )/( cos 9^@ - sin 9^@ ) =

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(cos9^(@)+sin9^(@))/(cos9^(@)-sin9^(@))=?

(cos 9^(@) +sin 9^(@))/(cos 9^(@) -sin 9^(@)) is equal to :

cos9^(@)-sin9^(@)=