There is the given. The instruction is to differentiate.
Now my question is, can I do..
..by using the trigonometric reciprocal identity, in which it results to
but on the other hand is it possible to do it in QUOTIENT RULE??
or what could be the correct procedure? may be you can show me the first step only then i will do the rest..include also the answer but not the solution so that i may compare it to what i will do..