How do you evaluate the integral ∫cscθ?
1 Answer
Mar 15, 2017
Explanation:
If you know the process of finding
Very unintuitively, make the modification:
Now let
Note that the numerator of the integral is just the derivative of its denominator times
=−∫−csc(θ)cot(θ)−csc2(θ)csc(θ)+cot(θ)dθ=−∫duu=−ln|u|
Reversing the substitution: