Question # 1

- 72° = ___________________:

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none of these

In circular system the angle is measured in:

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radians

degrees

degrees, minutes

degrees, seconds

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

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

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

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2

4

0

8

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

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

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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

The quadrant of an angle Θ is determined by its:

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sign

value

ratio

magnitude

1° is equal to:

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

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100°

200°

300°

320°

180° = _____________:

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π radians

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

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(1 - cos²Θ) (1 + cot²Θ) =

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tan²Θ

0

1

-1

(1 - sin²Θ) (1 + tan²Θ) =

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0

1

Θ

-1

cos⁴Θ - sin⁴Θ =

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sin 2Θ

cos 2Θ

tan 2Θ

sec 2Θ

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