If sin2 θ= 1/4, the general value of
2 n π ± (-1)n π/6
n π/2 ± (-1)'' π/6
n π± π/6
2 n π ± π/6
The value of tan 1o × tan 2o × ... × tan 89o is.
∞
1
2
1/√2
If A and B are acute angles such that sin A = sin2 B and 2 cos2 A = 3 cos2 B, then the value of A is.
The value of cos 15o - sin 15o is.
0
1/2
If sec2 θ = 4/3, the general value of θ is
n π ± π/6
2 n π ± π/3
n π ± π/3
If sin x + sin2 x = 1 then the value of cos12 x + 3 cos10 x + 3 cos8 x + cos6 is.
3
If for real values of x, cos θ = x + 1/x, then.
θ is an acute angle
θ is a right angle
θ is an obtuse amgle
No value of θ is possible
tan 211o =_______
-0.6009
0.9006
0.6009
-0.9006
The general value of θ which satisfies tan θ = -1 and cos θ = 1/√2 the equations is
n π + 7 π/4
n π + (-1)n 7π/4
2 n π + 7 π/4
If tan θ = -1/ √3, sin θ = 1/2, cos θ = -√3/2 , the principal value of θ is
π/6
5π/6
7π/6
-π/6
