Question

Draw two concentric circles with centre O and radii 3 cm and 5 cm. From a point on the outer circle draw a tangent to the inner circle.​

Answer 1

Step-by-step explanation:

tangent to a circle is perpendicular to the radius at the point of tangency.

Using this property and Pythagoras Theorem,

AO

2

=AP

2

+OP

2

5

2

=AP

2

+4

2

Thus, AP=4 cm