Angles and Arc Lengths

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  • Q1

    Marks:1
    Answer:

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  • Q2

    Find the radius of the circle in which an arc of length 44 cm subtends a central angle 120°.

    Marks:1
    Answer:

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  • Q3

    A wheel makes 120 revolutions in one minute. How much radians does it turn through in one second?

    Marks:1
    Answer:

    The wheel makes 120 revolutions in one minute, therefore, it makes 2 revolutions in one second.
    Since in one revolution, it turns through 2
    radian,
    So in 2 revolutions, it will turn through 4
    radians.

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  • Q4

    Express 1 radian in degrees.

    Marks:1
    Answer:

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  • Q5

    Which is greater 1° or 1 radian? Give reason.

    Marks:1
    Answer:

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