Question # 1

Which one is a quadrant angle ?

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60°

180°

120°

30°

1 radian is equal to:

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180°

none of these

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

The direction of an angle Θ is determined by its:

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value

magnitude

ratio

sign

(1 - cos²Θ) (1 + cot²Θ) =

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tan²Θ

0

1

-1

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In circular system the angle is measured in:

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radians

degrees

degrees, minutes

degrees, seconds

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

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I

II

III

IV

The quadrant of an angle Θ is determined by its:

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sign

value

ratio

magnitude

Which one is not a quadrant angle ?

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0°

90°

280°

270°

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

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