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

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

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

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

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

(cos9^(@)+sin9^(@))/(cos9^(@)-sin9^(@))=(a)tan54^(@)(b)tan36^(@)(d) None of these (c)tan18^(@)

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

sin9^(@)+cos9^(@)=sqrt(2)sin54^(@)

A=(cos9^(@)-sin9^(@))/(cos9^(@)+sin9^(@)),B=(cos21^(@)+sin21^(@))/(cos21^(@)-sin21^(@)) and C=tan20^(@)+tan40^(@)+sqrt(3)tan20^(@)tan40^(@) then descending order is

Prove that (sin36^(@)+cos36^(@))/(cos54^(@)+sin54^(@))=1

Prove that (4cos^(2)9^(@)-3)(4cos^(2)7^(@)-3)=tan9^(@)