Evaluate the following: `sin 36^0cos9^0+cos36^0 sin9^0`

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

Evaluate the following: sin 78^0cos 18^0-cos 78^0sin 18^0

Evaluate the following: sin39^0-cos51^0 (ii) cos e c25^0-sec65^0 cot34^0-tan56^0 (iv) (sin36^0)/(cos54^0)-(sin54^0)/(cos36^0) cos^2 13^0-sin^2 77^0

Evaluate the following: cos 80^0cos 20^0+ sin 80^0 sin 20^0

Evaluate the following: (i) sin39^0-cos51^0 (ii) cos e c25^0-sec65^0 +cot34^0-tan56^0 (iii) (sin36^0)/(cos54^0)-(sin54^0)/(cos36^0) +cos^2 13^0-sin^2 77^0

Evaluate the following: cos 47^0cos 13^0-sin 47^0 sin 13^0

Evaluate the following: cos47^(0)cos13^(0)-sin47^(0)sin13^(@)

Evaluate the following: (cos37^0)/(sin53^0) (ii) (tan54^0)/(cot36^0) (iv) (cos e c34^0)/(sec56^0)

Find the values of the following: sin75^0 (ii) cos75^0 (iii) sin15^0 (iv) cos15^0

Find the values of the following: sin75^0 (ii) cos75^0 (iii) sin15^0 (iv) cos15^0