In figure, the sides AB, BC and CA of a triangletouch a circle at P, Q

1.	In figure, the sides AB, BC and CA of a triangletouch a circle at P, Q and R respectively. If PA 4-3 cm and AC 11 cm, then find the length of BC P0.e in cm)[CBSE 20121ce, the tangents drawn from the external point to thecircle are equal.AP AR 4 cm
Answer» In2 triangle ABC, we have BP= BQ = 3cm AP= AR = 4cm ( tangents drawn from an external point to the circle are equal). So, RC = AC-AR =11-4=7cm Hence RC= CQ= 7 cm Then, BC= BQ+QC 7+3=10cm thanks

In figure, the sides AB, BC and CA of a triangletouch a circle at P, Q and R respectively. If PA 4-3 cm and AC 11 cm, then find the length of BC P0.e in cm)[CBSE 20121ce, the tangents drawn from the external point to thecircle are equal.AP AR 4 cm

Answer»

In2 triangle ABC, we have

BP= BQ = 3cm

AP= AR = 4cm

( tangents drawn from an external point to the circle are equal).

So, RC = AC-AR

=11-4=7cm

Hence RC= CQ= 7 cm

Then, BC= BQ+QC

7+3=10cm

thanks