Find the length of the tangent drawn to a circle of radius 8 cm, from a point which is at a distance of 10 cm from the center of the circle.
Given that AO = 10 cm, BO = 8 cm
Applying Pythagoras theorem
AB2 = AO2 – BO2
AB2 = 102 – 82
AB2 = 100 – 64
AB2 = 36
AB = 6 cm
Therefore the length of the tangent is 6 cm