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+1 vote
26.4k views
in Mathematics by (33.0k points)

The length of the tangent form an external point P to a circle of radius 5 cm is 10 cm. The distance of the point from the centre of the circle is 

(a) 8 cm (b) 104 cm (c) 12 cm (d) 125 cm

1 Answer

+1 vote
by (60.2k points)
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Best answer

We know that the radius and tangent are perpendicular at their point of contact 

In right triangle PTO 

By using Pythagoras theorem, we have

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