Question

show that (tan theta+sec theta)^2+(tan theta-sec theta) ^2=2(1+sin^2theta/1-sin^2theta)

Answer 1

This is your answer friend

Answer 2

tan@ + sec@ – 1 = (sin@ – cos@ + 1)/cos@
tan@ + sec@ + 1 = (sin@ + cos@ + 1) / cos@