Sinθ*cosecθ = ____________
1
0
180
none
tan 211o =_______
-0.6009
0.9006
0.6009
-0.9006
2
3
Sin 115o = ___________
0.9063
0.8063
0.7063
0.6063
If equaiton 2 sec 2 α = tan β, then one of the value of α + β is.
/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
sin 1150 =
1.9063
0.9563
The value of cos (270o + θ) - sin (270o - θ) cos θ is.
-1
1/2
If equation (A-B) = , then the value of (1+ tan A) ( 1 + tan B) is.
-2
If sin2θ- cosθ= 1/4, 0≤ θ ≤ θ 2 π, the value of θ is.
2π/3, π/3
π/3, 5π/3
- π/3, 2π/3
- 2π/3, 5π/3
