How do you simplify #(csc² t - cot² t) / sin² t#?
1 Answer
Mar 4, 2018
Explanation:
I like just sines and cosines, so let's work with those:
Let's get rid of the fractions up top by multiplying top and bottom by
Because
In hindsight, we could have also realized that there is a trig identity that
but that involves memorization, whereas the first thing doesn't.