Sin 90o =
0
1
∞
None
(1+ tanA)2 + (1-tanA)2 =
sec2A
secA
2sec2A
Cos4 A- sin4A=
(cos2A-sin2A)2
(cos2A+ sin2A)
1-2 sin2A
1-2 cos2A
Sinθ*cosecθ =
180
If θ =π/4, then 1+ tan 2 θ =
sin 2 θ
cot 2 θ
cosec2 θ
sec 2 θ
The general solution of sinx - 3 sin 2x+ sin 3x= cosx -3 cos2x + cos 3 x is
n π+ π/8
n π/2+ π/8
(-1)n(nπ/2)+π/8
2nπ+cos-1 (3/2)
The value of cos 1o cos 2o cos 3o .... cos 100o =
-b
None of these
If cos θ = -5/12 in which quadrant does θ lie ?
I quadrand
II quadrand
III quadrand
II or III
1+tan2θ =
cos2θ
sec2θ
cosec2θ
cot2θ
If θ = 30o find the value of sin2θ + cos2θ
2
4
