I have some questions and doubts in Trigonometry. I hope somebody can solve these questions.

Q1) If cosec theeta - cot theeta = 1/2, o< theeta< pie/2, then cos theeta is equal to

a) 5/3 b) 3/5 c) -3/5 d) -5/3

I will post the following questions soon.

P.S. I would also like to have the steps to solve the problem please.