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

Answers (1)


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.
 

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