The expression tan2∝+ cot2 ∝ is equal to
≥ 2
≤ 2
≥ -2
None of these
Sin 2 θ
Cos 2θ
Cosec 2 θ
Sec 2 θ
1
-1
0
The value of cos 1o cos 2o cos 3o .... cos 100o =
The value of sin 20o sin 40o sin 60o sin 80o is equal to
-3/16
5/16
3/16
-5/16
The value of Cos2 A ( 3-4 cos2 A)2 + sin2 A ( 3-4 sin2A)2 =
Cos 4 A
sin 4A
(tan 7o) (tan 23o) (tan 60o)(tan 67o)(tan83o) is
7
√3
The value of 1+ cos 56o + cos 58o - cos 66o is equal to
2 cos 28o cos 29o cos 33o
4 cos 28o cos 29o cos 33o
4 cos 28o cos 29o sin 33o
2 cos 28o cos 29o sin 33o
The value of cot (45o + θ) cot (45o - θ) is:
∞
If sin θ + cosec θ = 2, then sin2 θ + cosec2 θ is equal to
2
4
6
