Question

Find the length of the tangents drawn to a circle of radius 4 cm from a
point which is 8.5 cm from its centre.​

Answer 1

Answer:

AB= length of tangent, BC=8.5 cm, AC=4 cm

Step-by-step explanation:

By Pythagoras theorem,

AB*2=BC*2+AC*2

AB*2=(8.5)*2+(4)*2

AB*2=72.25+16

AB*2=88.25

AB=√88.25

AB=9.39 cm