Question

a point P is 15cm from the centre of the circle . the radius of circle is 5 cm. find the length of a tangent drawn to the circle from point P​

Answer 1

From Pythagorean theorm

Pr²= Or²+Op²

pr²= 5²+15²

pr = √5²+15²

= √250

=5√10

The length of tangent drawn to circle is 5√10.

Answer 2

Answer:

pr2 = Or2 + Op2

pr2 = 5square + 15 square

pr = √5square + 15 square

pr = √250

pr = 5√10