If r = 4 cm d=7 cm construct a triangle to a circle and find its length.
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Steps of construction:-
Construct a circle of radius 4cm.
P is a point 7cm away from the centre of the circle.
Join OP.
Draw perpendicular bisector of OP which intersects OP at M.
Taking M as centre and OM as radius draw a circle which intersects the circle C
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at A and B.
Join PA and PB.
On measuring we find PA=PB=7.7cm.
Hence PA and PB are required tangents.
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