Question

A circle with radius 12cm12cm , from a point P which is 20 cm away from the centre then length of tangent is​

Answer 1

Answer:

Length of the tangent = 16 cm

Step-by-step explanation:

Side / length of the tangent

${ap}^{2} = {op}^{2} - {ao}^{2} \: \\ {ap}^{2} = {20}^{2} - {12}^{2} \\ {ap}^{2} = 400 - 144 = 256 \\ ap = \sqrt{256} \\ ap = 16$

Tangent AP = 16 cm