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Area of a Sector of a Circle

Find the angl...

Question

Find the angle subtended at the centre of a circle of radius 5 cm by an arc of length (5π/3) cm.

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Solution

We know that the arc length l of a sector of an angle θ in a circle of radius r is

It is given that and length . Substituting these value in above equation,

Hence, the angle subtended at the centre of circle is.

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