tan 211o =_______
-0.6009
0.9006
0.6009
-0.9006
If sin θ + cos θ =1 , the general value of θ is
2 n π
n π + (-1)n π/4 - π/4
2 n π+ π/2
n π+ π/2
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 sin x + sin2 x = 1 then the value of cos12 x + 3 cos10 x + 3 cos8 x + cos6 is.
1
2
3
0
Sin 115o = ___________
0.9063
0.8063
0.7063
0.6063
The value of log tan 1o + log tan 2o + ... + log tan 89o is.
tan 1o
tan 89o
If sin θ = √3/2, the general value of θ is
2 n π ± π/6
2n π ± π/3
n π + (-1)n π/3
nπ +(-1)'' π/6
If √3 sec θ +2 = 0 , the general value of θ is
2 n π ± 2 π/3
2 n π ± π/3
2 n π ± 5 π/6
Sin90o = ______________
∝
none
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
