I need to simplify these equations:

(1-cosx)(1+secx)cosx

tanx+cotx/sec^2x

(tan^2x/secx+1)+1

And for these, I need to solve for the degrees (nearest tenth)

tan^2x=1

2tan^2x=3tanx-1

Solve for radians (nearest hundreth)

3sinx=cosx

secx=2cscx

Any help is greatly appreciated!!!