Question

11. If the points P(m, n), Q(-3,-1) and R(3, 4) are
such that PO = PR, then
(1) m=n
(2) 10n + 12m = 15
(3) 5 + 6m = 7
(4) 10n - 12m = 9​

Answer 1

Answer:

Consider the figure.  

We know that the tangent is perpendicular to the radius of a circle.  

So, OPB is a right angled triangle, with ∠OBP=90°

By using pythagoras theorem in △OPB, we get

option 1