Question

in the given fig AB, BC and CD are the tangents to a circle with centre o if AB=3cm,CD=5cm.find the length of BC​

Answer 1

Answer:

(AB)² + (BC)² =(CD)²

3² + BC² = 5²

9 + BC² = 25

BC² = 25-9

BC²=16

BC=√4

BC= 4 cm