Question

proving identities:
tan - sec = -(cos/(1+sin))

Answer 1

@UnkleRhaukus

Answer 2

(sin/cos)-(1/cos)= (sin-1)/cos
time and divided by (sin +1)
(sin^2 -1)/(cos ( sin +1)
= (-cos^2)/(cos (sin+1)
=(-cos)/(1+sin)

Answer 3

thanks @Loser66