if d1 , d2 (d2 d1) be the diameters of 2 concentric circles c be the length of a chord of a cirlclewhich is tangent to the other circle,prove that d2 2 = c2 + d1 2 Share with your friends Share 0 Varun.Rawat answered this Refer the following link :https://www.meritnation.com/ask-answer/question/if-d1-d2-d2-d1-be-the-diameters-of-two-concentric-ci/circles/3623500 0 View Full Answer