2
1
4
3
Evaluate: cos40° cosec50° + sin50° sec40°
0
(1 + cot A - cosec A) (1 + tan A + sec A) =
5
Evaluate: sin42º sin 48° - cos42° cos48°.
Evaluate: sin2 35° + sin2 55°
6
Evaluate: sin 15° cos 75° + cos 15° sin 75°.
cot A
cosec A
cosec A - cot A
cosec A + cot A
sec A + tan A
1 + sec A
cosec A + 1
