Question

CP and CQ are tangents to a circle with centre O.

ARB is another tangent touching the circle at R. If

CP=11cm, BR=4cm, find the length of BC.​

Answer 1

Answer:

4cm

Step-by-step explanation:

CQ and CP are the tangents to a circle

So, CQ=CP (Tangents to a circle from a common point (C) are equal in length)

CP=CQ=11

Also, BC+BQ=11

⇒BC+7=11

⇒BQ=4

So, BR=BQ=4. (Tangents to a circle from a common point (B) are equal in length)