tan^2BeatacscBeta-tan^2 (simplify)

Question

(sin/cos)^2Beta times 1/sin-(sin/cos)^2

(sin^2/cos^2)-(sin^2/cos^2)=-sin/cos

Is this correct?

Answer 1

(s^2/c^2)(1/s) - s^2/c^2

(s^2/c^2) [ 1/s -1 ]

(s^2/c^2)(1-s)/s

(s/c^2)(1-s)

I do not know what more can be done.