`cos9^@-sin9^@=`

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

((cos 9^@+sin 81^@)(sec 9^@+ cosec 81^@))/(sin 56^@ sec 34^@+ cos 25^@ cosec 65^@) =?

The value of ((cos 9^@+sin81^@)(sec9^@+ cosec81^@))/(sin56^@ sec34^@+cos25^@ cosec 65^@) is:

The value of (cos 9^(@) +sin 9^(@))/(cos 9^(@) -sin 9^(@)) is equal to-

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

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

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

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

" Prove that "(cos9^(0)+sin9^(0))/(cos9^(0)-sin9^(0))=cot36^(@)