Question # 1

- 72° = ___________________:

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none of these

Which one is a quadrant angle ?

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60°

180°

120°

30°

If s denotes the length of the arc intercepted on a circle of radius r by a central angle of α radians, then:

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s = rα

s = r + α

none of these

Which one is not a quadrant angle ?

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0°

90°

280°

270°

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In a circle of radius r, an arc of length kr will subtend in angle of __________ radians at the center:

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s

k

r

Θ

1 radian is equal to:

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180°

none of these

If cosec Θ > 0 and cot Θ < 0, then terminal arm of the angle lies in:

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I

II

III

IV

To convert any angle in radians into degrees, we multiply the measure by:

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The quadrant of an angle Θ is determined by its:

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sign

value

ratio

magnitude

The system of measurement in which the angle is measured in degrees, and its sub-units, minutes and seconds is called the:

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circular system

sexagesimal system

decimal system

degree system

If sin α < 0 and cos α > 0, then α lies in:

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I

II

III

IV

If the initial side of an angle is the positive x-axis and the vertex is at the origin, the angle is said to be in the _____________:

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initial position

finalposition

normalposition

standardposition

1° is equal to:

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The area of a sector of a circular region of radius r with length of the arc of the sector equal to s is-----------:

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rΘ

rs

The angle between 0° and 360° and co-terminal with - 620° is:

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100°

200°

300°

320°

If tan Θ > 0 and sin Θ < 0 then terminal arm of the angle lies in quadrant:

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I

II

III

IV

If sin Θ + cosec Θ = 2, then sin² Θ + cosec² Θ =

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2

4

0

8

The number of radius in the angle subtended by an arc of a circle at the center =

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radius × arc

radius - arc

If sinΘ <0, cosΘ<0 then the terminal arm of the angle lies in quadrant:

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I

II

III

IV

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