JEE Mains/AdvancedJEE Mains/Advanced VideosAngle Between Edge and Face of Tetrahedron Vectors IIT JEE - Videos April 9, 20180244Facebook Twitter Google+ Pinterest WhatsApp Related Examples: https://www.youtube.com/watch?v=B7s63zwLYVE&index=6&list=PLJ-ma5dJyAqpnnEYrc9T64NDlB4w4rPHgsource