In a circle of radius 3 cm, a point lies 5 cm away from its centre, then find the length of tangent to the circle through this point
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Step-by-step explanation:
Steps of construction :
1.Take a point O as center and with radius 3 cm ,draw a circle.
2.Mark a point P outside the circle such that OP=5 cm.join O to P.
3.Draw a perpendicular bisector of OP that cuts OP at M.
4.With M as a center and radius MO (or MP),draw a circle cutting the first circle at A and B.
5.Join P to A and P to B
Then PA and PB are the required two tangents
The length of the tangent are PA=PB=4 cm.
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