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

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Prove that sin 36^(@) + cos 36^(@) = sqrt(2) cos 9^(@)

Prove that sin 36 ^(@) + cos 36 ^(@) = sqrt2 cos 9^(@).

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

If 47^(0)+s in61^(0)-s in11^(0)-s in25^(0) is equal to a*sin36^(@) b.cos36^(@) c.cos7^(0) d.cos7^(0)

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

cos36^(@)-cos72^(@)=

Evaluate the following: sin36^(@)cos9^(0)+cos36^(@)sin9^(0)

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

cos(36^@-A)cos(36^@+A)+cos(54^@+A)cos(54^@-A) = cos2A

If sin47^0+sin 61^0-sin 11^0-sin 25^0 is equal to a. adot\ sin36^0 b. cos36^0 c. cos7^0 d. cos7^0