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In Fig . pair of tangents AP and AQ draw...

In Fig . pair of tangents AP and AQ drawn from an external point A to a circle with centre O are perpendicular to each other and length of each tangent is 5 cm. Find the radius of the circle.

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5 cm
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Knowledge Check

  • The pair of tangents AP and AQ drawn from an external point to a circle with centre O are perpendicular to each other. If the length of each tangent is 5 cm , then radius of the circle is

    A
    10 cm
    B
    `7.5 ` cm
    C
    5 cm
    D
    ` 2.5 ` cm

  • 2 equal tangents PA and PB are drawn from an external point P on a circle with centre O. What is the length of each tangent, if P Is 12 cm from the centre and the angle between the tangents is 120^@ ?

    A
    24 cm.
    B
    6 cm.
    C
    8 cm.
    D
    Cannot be determined

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