Trignometry SSC CHSL Questions

Trignometry

Trignometry MCQ Questions

7.

The length of a rectangle is five times of its breadth. If the area of the rectangle is 3125 cm2, then what is the length of the rectangle?


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A.

125 cm

B.

120 cm

C.

135 cm

D.

130 cm

ANSWER :

A. 125 cm

8.
Let O be the centre of a circle. PA and PB are tangents to the circle from a point P outside the circle and A and B are points on the circle. If angle APB = 50°, then angle OAB is equal to:
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A.
25°
B.
20°
C.
40°
D.
50°
ANSWER :
A. 25°
9.

2 cos θ + sec θ - 2\(\sqrt{2}\) = 0, where θ is an acute angle. Find the value of θ.


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A.

30°

B.

15°

C.

60°

D.

45°

ANSWER :

D. 45°

10.

In â–³ABC, if ∠B = 90°, AB = 21 cm and BC = 20 cm, then \(\dfrac{1+\sin A-\cos A}{1+\sin A+\cos A}\) is equal to:


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A.

\(-\dfrac{3}{5}\)

B.

\(\dfrac{2}{5}\)

C.

\(-\dfrac{2}{5}\)

D.

\(\dfrac{3}{5}\)

ANSWER :

B. \(\dfrac{2}{5}\)

11.

If sec θ =\(\dfrac{65}{63}\) and θ is an acute angle, then the value of 8(cosec θ - cot θ) is:


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A.

1

B.

4

C.

2

D.

8

ANSWER :

A. 1

12.

If \(\dfrac{ \mathrm{cosec}\theta + \cot\theta}{ \mathrm{cosec}\theta - \cot\theta}\) = 7, then the value of \(\dfrac{4\sin^{2}\theta + 5}{4\sin^{2}\theta - 1}\) is:


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A.

3

B.

15

C.

9

D.

12

ANSWER :

C. 9