Find the value of x if, sin x = sin 60° cos 30° - cos 60° sin 30°
30°
45°
60°
90°
3
1
0
2
(1 + cot A - cosec A) (1 + tan A + sec A) =
4
5
Evaluate: cos240° + cos250°.
sec A + tan A
cosec A + cot A
1 + sec A
cosec A + 1
Evaluate: sec2 18° - cot2 72°.
Evaluate: sin 15° cos 75° + cos 15° sin 75°.
