Let be a point outside a circle with centre and radius cm

MATHEMATICS · Subjective · ICSE · Mathematics · Geometry · Geometry

Problem

Let

P

be a point outside a circle with centre

O

and radius

r

cm. If

OP = r + 4

cm and the length of the tangent from

P

to the circle is

\dfrac{3}{5}r

cm, determine the values of

r

and the tangent length.