Question

(sec(x)+tan(x))((1-sin(x))/cos(x))=1

Answer 1

Use sinx/cosx=tanx

Answer 2

And secx=1/cosx

Answer 3

\[(\frac{ 1 }{ cosx }+\frac{ sinx }{ cosx })(\frac{ 1-sinx }{ cosx })=1\]\[(\frac{ 1+sinx }{ cosx })(\frac{ 1-sinx }{ cosx })=1\]\[\frac{ 1-\sin ^{2}x }{ \cos ^{2}x }=1\]...now use the Pythagorean identity to simplify

Answer 4

i have already done that. now what

Answer 5

Solve the pythagorean identity for cos^2x and see what you get.

Answer 6

how do you use the Pythagorean identity for cos^2x