Cos (-17600) =
-0.7660
0.7660
1
0
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
The minimum value of 5 sin 2 θ + 4 cos 2 θ is
2
3
4
If θ =π/4, then 1+ tan 2 θ =
sin 2 θ
cot 2 θ
cosec2 θ
sec 2 θ
Cos4 A- sin4A=
(cos2A-sin2A)2
(cos2A+ sin2A)
1-2 sin2A
1-2 cos2A
(1+ tanA)2 + (1-tanA)2 =
sec2A
secA
2sec2A
If θ = 30o find the value of sin2θ + cos2θ
1 - cos2θ - sin2θ =
1+tan2θ =
cos2θ
sec2θ
cosec2θ
cot2θ
The value of cos 1o cos 2o cos 3o .... cos 100o =
-b
None of these
