Trigonometry - MCQTrip

Welcome to Trigonometry. The quiz will randomly run 20 questions from Trigonometry which you have to answer in 10 minutes.

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In an oblique triangle, a=25, b=16, angle C=94˚06’. Find the measure of angle A.

45.5˚

24.5˚

54.5˚

The system of measurement in which the angle is measured in radians called the

Sexagesimal system

CGS system

Circular system

MKS system

The area of a sector of a circular region of radius r and the central angle of the sector θ radians is

r²θ

1/2rθ

1/2rθ²

1/2r²θ

sinAcosB + sinBcosA= ?

cos(A+B)

cos(A-B)

sin(A+B)

sin(A-B)

If an arc of length l of circle of radius r students' an angle θ radian at the center, then l =

1/r θ

r/θ

θ/r

rθ

cos^4 θ – sin^4 θ= ?

cos 2θ

cos 3θ

sin 2θ

cos 4θ

The central angle of an arc of a circle whose length is equal to the radius of the circle is called the

radian

degree

second

minute

Sin^2 15˚+sin^2 75˚

10.

csc 520˚ is equal to

csc 20˚

tan 45˚

cos 20˚

sin 20˚

11.

If cotθ > 0 and sinθ < 0, then terminal arc of the angle lies in quadrant :

12.

Sin A=2.5x, cos A= 5.5x. Find A.

64.44˚

44.44˚

24.44˚

34.44˚

13.

If cosθ = 1/√2, then θ is equal to

90°

30°

60°

45°

14.

cot(α + β) =

cotαcotβ-1/cotα+cotβ

cotαcotβ+1/cotα-cotβ

cotαcotβ+1/cotα+cotβ

15.

2700 mils is how many degrees?

131.875˚

151.875˚

180˚

270˚

16.

Two cities whose longitudes are 20°E and 40°W on the equator are apart

6702km

.2000km

2500km

1000km

17.

The area of a sector with a central angle of 1 radians in a circular region whose radius is 2m is

1m²

2m²

0.5m²

π/6m²

18.

If α,β,γ are the angles of a triangle ABC, then cos(α + β) =

−cosγ

cosγ

−sinγ

sinγ

19.

sin(α + β) + sin(α – β)/cos(α + β) + cos(α – β) =

−cot α

cot α

tan α

sin²α-cos²β

20.

An arc AB of length of 5 cm is marked on a circle is marked on a circle of radius 3cm. The area of sector bounded by this arc and radii from A and B is

7.5 m²

75 cm²

7.5 cm²

75 m²

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