Question

I needed the answer to this...thanks...

Answer 1

GIVEN :PQ AND RC ARE THE TANGENTS TO THE CIRCLES WITH CENTRE A AND B .
TO PROVE THAT PR=RQ
THEOREM 10.2: TANGENTS DRAWN FROM AN EXTERNAL POINT TO THE CIRCLE ARE EQUAL IN LENGTH.
NOW,BY THEOREM 10.2 PR=CR.......1
AND RQ=CR..............2
FROM 1 AND 2 WE GET, PR=QR 
HENCE PROVED