If θ =π/4, then 1+ tan 2 θ =
sin 2 θ
cot 2 θ
cosec2 θ
sec 2 θ
If √3 sec θ +2 = 0 , the general value of θ is
2 n π ± 2 π/3
2 n π ± π/6
2 n π ± π/3
2 n π ± 5 π/6
If sec2 θ = 4/3, the general value of θ is
n π ± π/6
n π ± π/3
Cosecθ = 1/_
Cosθ
Sinθ
tanθ
Cotθ
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
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
Sin 115o = ___________
0.9063
0.8063
0.7063
0.6063
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
The value of log tan 1o + log tan 2o + ... + log tan 89o is.
1
0
tan 1o
tan 89o
The value of sin 47o + cos 61o -sin 11o - sin 25o is.
sin 36o
sin 7o
cos 36o
cos 7o
