____________=1+tan2θ
cos2θ
sec2θ
cosec2θ
cot2θ
Cos (-17600) =
-0.7660
0.7660
1
0
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 - cos2θ - sin2θ =
2
3
If A, B, C, D are the angle of a cyclic quadrailater , 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)
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
The minimum value of 5 sin 2 θ + 4 cos 2 θ is
4
The equation sinx+ cosx = 2 has
Infinite solutions
Two solutions
Unique solution
No solution
