Sorry to ask again, but I need help with these problems:

(secx+1)/tanx = sinx/(1-cosx)

I got (1+cosx)/sinx which is the opposite of what I need.

tan^4x + tan^2x = sec^4 - sec^2x

tan^2x - sin^2x = tan^2x * sin^2x

sinx/(1+cosx) + (1+cosx)/sinx = 2cscx

I could only figure out about half of my homework and I would ask the teacher, but she isn't at school in the morning for tutoring.