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PA and PB are two tangents drawn from an external point P to a circle with centre C and radius 4cm. If PA is perpendicular to PB then the length of each tangent is

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From the figure given above,
CA is perpendicular to AP and CB is perpendicular to BP
Again AC=BC=4(radius of the circle)
Also AP=PB=(Tangents from point P)
So,BPAC is a square
Rightarrow AP=PB=BC=CA=4cm
So.length of tangents are 4cm each.
 

Posted by

Deependra Verma

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