Question

Very each identiy:
tan^2x/secx=secx-cosx

Answer 1

ok !
before u solve this one u have to remember this
1 + tan^2 x = sec^2 x
then
tan^2 x = sec^2 x -1

then substitute that in to the above equation..
tan^2 x / secx
= (sec^x - 1)/sec x
= (sec^2 x/secx ) - (1/secx)
= sec x - cos x

thats it!
hope this will help ya!!

Answer 2

Thank you so much!!!!!! :DDD