(1+ tanA)2 + (1-tanA)2 =
sec2A
secA
2sec2A
Sin 90o =
0
1
∝
None
If θ = 30o find the value of sin2θ + cos2θ
2
4
Sinθ*cosecθ =
180
none
Cos (-17600) =
-0.7660
0.7660
1 - cos2θ - sin2θ =
3
Cos4 A- sin4A=
(cos2A-sin2A)2
(cos2A+ sin2A)
1-2 sin2A
1-2 cos2A
The minimum value of 5 sin 2 θ + 4 cos 2 θ is
If θ =π/4, then 1+ tan 2 θ =
sin 2 θ
cot 2 θ
cosec2 θ
sec 2 θ
____________=1+tan2θ
cos2θ
sec2θ
cosec2θ
cot2θ
