tanA+secA-1/ tanA-secA+1=1+sinA.cosA Share with your friends Share 0 Varun.Rawat answered this Refer the following link : https://www.meritnation.com/ask-answer/question/prove-that-tana-seca-1-tana-seca-1-1-sina-cosa/math/7916849 0 View Full Answer