Problem:

cos^2(x) / sin^2(x) + csc(x)sin(x)

I've worked on it,

On the right of the + sign I changed the csc(x) into 1/sin(x)

so...

cos^2(x) / (sin^2(x)) + 1/sin(x) * sin(x)

cos^2(x) / (sin^2(x)) + 1

1/sec^2(x) / (sin^2(x)) +1

1/sec^2(x) / (1/ csc^2(x)) + 1

then i dont know where to go from there...