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

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

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

Prove : (cos 9^(@) +sin9^(@))/(cos9^(@) - sin9^(@)) = tan54^(@)

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

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

A =(cos 9^(@) - sin 9^(@))/(cos 9^(@) + sin 9^(@)) , B = (cos 21^(@) + sin 21^(@))/(cos21^(@) -sin21^(@)) and C= tan 20^(@) + tan40^(@) + sqrt(3)tan20^(@) tan40^(@) then descending order 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 :

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

(cos9^(@)+sin9^(@))/(cos9^(@)-sin9^(@))=tan54^(@)