Cos 134o = ___________
-0.6947
0.7947
-0.6375
0.2945
If θ = 30o find the value of sin2θ + cos2θ
1
0
2
4
If cos θ = 1/2 ( a+1/a), then the value of cos 3 θ is.
1/8 (a3 + 1/a3)
3/2 (a + 1/a)
1/2 (a3 + 1/a3)
1/3 (a3 + 1/a3)
If tan 2 θ + tan θ = 1, the general value of θ is
(n+ 1/2 ) π/3
(n+ 1/2 ) π
(2n + 1/2 ) π/3
(2 n- 1/2 ) π/3
The smallest positive angle which satisfies the equation 2 sin2 θ +√3 cos θ + 1 = 0 is.
If √3 cos θ + sin θ = √2, the general value of θ is
n π+ (-1)'' π/4
(-1)n π/4 + π/3
n π + π/4 - π/3
n π + (-1)'' π/4 - π/3
tan675o = ____________
-1
none
If cos (A-B) = 3/5 and tan A tan B = 2, then.
cos A cos B = 1/5
cos A cos B = -1/5
sin A sin B = -2/5
sin A sin B = - 1/5
The value of cos 15o - sin 15o is.
1/2
tan 211o =_______
-0.6009
0.9006
0.6009
-0.9006
