Got one question from book, i try to do but my answer is wrong...
Differentiate the function with respect to A.
In(cosecA + cotA)
After differentiate cosecA+cotA i stuck.
Answer: -cosecA
First of all, it's , which stands for Natural Logarithm. Write the inverse trig functions in terms of what you already know...
So .
You have a composition of functions, so you need to use the chain rule.
Let , so .
Can you go from there?
Note, to find you'll have to use the Quotient rule.