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## Homework Statement

verify the following identity:

Sec(x)Sin

^{2}(x)

______________________ = 1 - cos(x)

1 + sec(x)

## Homework Equations

sec(x)=1/cos(x)

sin

^{2}(x)=1-cos

^{2}(x)

## The Attempt at a Solution

I never know how to start off these problems. I have to take the left side and show that it equals the right by doing trig identities. I try several steps and keep going through an endless loop. I believe I must start of by multiplying 1-sec(x)/1-sec(x)

That way i get

(1-sec(x))(sec(x)sin

^{2}(x))

__________________________________

1 - sec

^{2}(x)

I'm not sure if i'm starting off correctly