AP is the tangent to the circle with centre O and radius 8 cm . If AB = 9 cm, then find the length of tangent AP.
The tangent at any point of a circle is perpendicular to the radius through the point of contact. ∴AP⊥OP
A cone of height 36 cm and base radius 9 cm is reshaped into a sphere. Find the radius of the sphere formed.
In the figure, the pair of tangents AP and AQ drawn form an external point A to a circle with centre O are perpendicular to each other and length of each tangent is 5 cm. Then the radius of the circle is:
In the given figure, AB and AC are tangents to a circle with centre O and radius 8 cm. If OA = 17 cm, then the length of AC (in cm) is
(a) 9 (b) 15 (c) √353 (d) 25