How do you verify #tan^2(x) / sec(x) = sec(x) - cos(x) #?
First prove that
(Lightly used source: https://answers.yahoo.com/question/index?qid=20080831084348AAj0BJV)
Start with the identity
Divide both sides by
Now simplify. Remember sin/cos = tan, and 1/cos = sec
There. Now that we've proven that
There we go! If this doesn't make sense, don't worry. Let me know in the 'comments' and I'll give you a list of the trigonometric identities I used to solve this.