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

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

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

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

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

A=(cos9^(@)-sin9^(@))/(cos9^(@)+sin 9^(@)), B=(cos21^(@)+sin21^(@))/(cos21^(@)-sin21^(@)) and C=tan 20^(@)+tan 40^(@)+sqrt(3)tan20^(@)tan40^(@) then descending order is

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

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

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

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