Question

find the lenght of tangent CD if AP is 3cm and PC is 8cm ​

Answer 1

AP = 3cm
PC = 8 cm
let m be point on PC.
then PM = 3 cm ( tangents drawn from an external point are equal.)
CM = 8 - 3 = 5 cm .
CD = CM = 5cm ( || ).
Hope this helps you.