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 =
1
0
9
-9
If 0 ≤ x ≤ 90, state the numerical value of x for which sin xo = cos xo.
30
45
60
90
Find tan 240 + cos 420.
cot 66 + sin 48
cot 48 + sin 48
tan 24 + cos 420
cot 66 + cos 24
If secθ + tanθ = 3 and secθ - tanθ = n, then value of mn is
2
± 1
± 2
If 4 sin 2 θ - 1 = 0 and θ is less than 90o, then the value of θ is
45o
60o
90o
30o
Find the value of (cos0° + sin45° + sin30°) (sin90° - cos45° + cos60°).
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
If tan A = 4/3, then sinA, cosA are
sinA = 4/5, cos A = 3/5
sinA = 5/4 , cosA = 5/3
sin A = 3/4 , cosA = 4/3
sinA = 35/4, cosA = 0
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
