If the ratio of the arc AB to the circumference of a circle is 1:3,then measure of the angle subtended by the arc at the centre is

72^o

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172^o

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65^o

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120^o

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Solution

The correct option is D
120^o

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If the ratio of the arc AB to the circumference of a circle is 1:3,then measure of the angle subtended by the arc at the centre is

The correct option is D 120o

The correct option is D
120^o