(1+ tanA)2 + (1-tanA)2 =
sec2A
secA
2sec2A
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
1
2
3
4
If A, B, C, D are the angle of a cyclic quadrailater at, then cos A + cos B + cos C+ cos D is equal to
2 (cos A + cos C)
2 (cos A + Cos B)
2 (cos A + cos D)
0
1+tan2θ =
cos2θ
sec2θ
cosec2θ
cot2θ
If θ =π/4, then 1+ tan 2 θ =
sin 2 θ
cot 2 θ
cosec2 θ
sec 2 θ
The value of cos 1o cos 2o cos 3o .... cos 100o =
-b
None of these
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
Sinθ*cosecθ =
180
none
