Question

find the length of tangent froma point13 cm away from the centre of the circle of radius 5 cm​

Answer 1

Answer:

in the triangle above formed

by pythagoras theorem

as angle formed by radius and tangent at point of contact is a right angle

(13)^2=(5)^2+(radius)^2

169=25+(radius)^2

169-25= (radius)^2

144 =(radius)^2

radius =12cm