sin54^(@)-cos36^(@)=

cos54^(@)cos36^(@)-sin54^(@)sin36^(@)=0

sin36^(@)+cos36^(@)=sqrt(2)cos9^(@)

Prove that (sin36^(@))/(cos54^(@))+(cos36^(@))/(sin54^(@))=2

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

Evaluate the following: (i) (cos37^(@))/(sin53^(@))(ii)(sin41^(@))/(cos49^(@))(iii)(tan54^(@))/(cot36^(@))

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

Value of (2sin9^(@)sin 21^(@)sin 39^(@)sin 51^(@)cos21^(@)sin 81^(@))/(sin54^(@)) is equal to:-

Value of (2sin9^(@)sin 21^(@)sin 39^(@)sin 51^(@)cos21^(@)sin 81^(@))/(sin54^(@)) is equal to:-

Show that cos 36^(@) cos 54 ^(@) -sin 36^(@) sin 54^(@) =0