If 2 cos2x + 3 sin x -3 = 0, 0≤ x,≤1800, then x =
300, 900,1500
600,1200,1800
00,300,1500
450, 900,1350
The minimum value of 5 sin 2 θ + 4 cos 2 θ is
1
2
3
4
1+tan2θ =
cos2θ
sec2θ
cosec2θ
cot2θ
1 - cos2θ - sin2θ =
0
If θ =π/4, then 1+ tan 2 θ =
sin 2 θ
cot 2 θ
cosec2 θ
sec 2 θ
Cos (-17600) =
-0.7660
0.7660
The general solution of sinx - 3 sin 2x+ sin 3x= cosx -3 cos2x + cos 3 x is
n π+ π/8
n π/2+ π/8
(-1)n(nπ/2)+π/8
2nπ+cos-1 (3/2)
Sin 90o =
∝
None
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
(1+ tanA)2 + (1-tanA)2 =
sec2A
secA
2sec2A
