If x = a (sec θ + tan θ)2 and y = b (sec θ - tan θ)4, then the value of x4y2 is.
a2b4
a4b2
ab sec θ
a2b2 tan2 θ
The value of cos 172o + cos 52o + cos 68o is.
3/2
1
0
2
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
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 2 cos2x + 3 sin x -3 = 0, 0≤ x,≤1800, then x =
300, 900,1500
600,1200,1800
00,300,1500
450, 900,1350
Sinθ*cosecθ = ____________
180
none
The value of sin2 5o + sin2 10o + sin2 15o + ... + sin2 85o + sin2 90o is.
7
8
9
9 1/2
Sin90o = ______________
∝
The value of cos (270o + θ) - sin (270o - θ) cos θ is.
-1
1/2
√3
