Prove the identity Cosx+1/Tan^2x= Cosx/ Secx-1

im in dire need of assistance with this question can someone please help?

Making assumptions about where parentheses should be,
cosx/(secx - 1) =
(secx + 1)/(secx + 1) cosx/(secx - 1) =
(secx cosx + cosx)/(sec^2x - 1) =
(1 + cosx)/tan^2x =
(cosx + 1)/tan^2x

(secx-1)(cosx+1)=sin^2x/cosx

1/cosx-cosx=sin^2x/cosx

cosx((1-cos^x)/cosx)=(sin^2x/cosx)cosx

1=sin^2x+cos^2x