cos81^(@)-sin9^(@)=0

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

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

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

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

If the value of cos9^(@)-sin9^(@)=sqrt(2)sin alpha where a in[0,3 pi], then the value of 'alpha' can be -

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

the value of (cos81^(@))/(sin3^(@)sin57^(@)sin63^(@))=

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

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