If sinφ = 1/2, then 3cosφ - 4cos3φ = ?
1
cosφ
cos2φ
0
If in ΔABC, ∠B = 90°, AB = 12 cm and BC = 9 cm, then the value of cos C is
3/5
3/4
5/3
4/3
If x cosθ - y sinθ = a, x sinθ + ycosθ = b, then x2 + y2 =
a2 + b2
a + b
(a + b)2
a2 + b
9 tan2θ - 9 Sec2θ =
9
-9
Find the value of (cos0° + sin45° + sin30°) (sin90° - cos45° + cos60°).
In right angled triangle ABC, ∠ B = 900 and ∠ C = 30o. If AC = 10 cm, find the length of the sides AB and BC.
5 cm , 5 √3 cm
4 cm, 4 √2 cm
5 cm, √3 cm
6 cm, 5 cm
If sin 3A = cos (A - 26), then the value of A is
20
28
27
29
Solve for φ, if tan5φ = 1
8o
45o
5o
9o
In the figure given below, ΔABC is right angled at B. Given that AB = y units, BC = √3 units, AC = 2 units and∠ A = xo, find sin xo.
1/2
1/√2
√3/2
sin 450 - cos 450 =
2
5
7
