if y= log tan ( pi/4+ x/2) show that dy/dx - sec x = 0 Share with your friends Share 0 Pooja answered this Here is the link to answer: https://www.meritnation.com/ask-answer/question/find-derivative-of-y-log-tan-pie-4-x-2/continuity-and-differentiability/401998 1 View Full Answer