How to solve challenging problems of inverse trigonometric functions using graphs

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Watch this video to solve a complicated problem based on inverse trigonometric function using graphs. The video starts with explanation, how knowledge of graphs is very helpful to quickly solve the problems and then solves the problem asked in IIT 1994, which is “Let f:[0,4pi]-[0,pi] be defined by f(x) = arcos(cosx). The number of points x in [0,4 pi] satisfying the equation f(x)=(10-x)/x is (a) 2 (b) 3 (c) 4 (d) 5” The video is appropriate for the students of high secondary school. In particular students preparing for competitive exams e.g. engineering entrance (IIT JEE Mains & Advanced, JEE WB, BITS, VIT, AMU, Manipal Engineering, EAMET Engg, KCET, MHT CET etc), NDA, CDS, SSC (CGL) should find it useful. Thank you watching and please share with your friends and subscribe our channel.