PQR is right triangle right angled at Q. if QS=SR, show that PR2 =4PS2-3PQ2 Share with your friends Share 2 Priyanka Kedia answered this Refer the link: https://www.meritnation.com/ask-answer/question/pqr-is-a-right-triangle-right-angled-at-q-if-qs-sr-show/triangles/2991835 6 View Full Answer