AQA Board: January 2012 Q6.
"Given that x = 1 / sin(x) , show that dx/dθ = -cosec(θ)cot(θ)"
How do I solve this question?
I've got my answer down as far as -cos(θ) / sin^2(θ) and I don't know how to get it to the answer in the question. :P
The mark scheme gets to where I have got to then skips straight to the answer. Is there a trigonometric identity that don't know?
Help appreciated.