Question

sinx-cosx+1/sinx+cosx+1=1+sinx/cosx

Answer 1

Answer:

Step-by-step explanation:

(s-c-1)(s+c-1)/(s+c+1)(s+c-1)

=(s-1-c)(s-1+c)/(s+c)²-1

={(s-1)²-c²}/(s²+c²)+2sc-1

=s²+1–2s-c²/1+2sc-1

=s²+1–2s-(1-s²)/2sc

=2s²-2s/2sc...÷(2s)→

=(s-1)/c

=(s/c)-(1/c)

=tanx-secx