Question

In fig CP and CQ are the tangent to the circle with the center O. ARB is another tangent touching the circle at R. If CP=11cm, BC=7cm find the length of BR

Answer 1

cp and cq are tangents to a circle with center O
cp=cq=11cm
BR and BQ are tangents to same circle
BR=BQ
BUT BQ=CQ-BC
=11cm-7cm
=4cm
BR=4cm