Trigonometric Identities


Key Terms

Even Function  -  A function for which f (- x) = f (x) .
Odd Function  -  A function for which f (- x) = - f (x) .
Trigonometric Identity  -  An equation containing a trigonometric function that any angle will solve.

Take a Study Break

Green YOUR SCHOOL!

Click here to get involved with dosomething.org!

John Krasinski's BIG MIRACLE

Click to watch the trailer and read exclusive star interviews!

Do you like Anna?

Read Dear Albert... from ANNA's perspective!

BATTLESHIP, the movie

Here's why we're super jazzed about it.


The Book

Cover image

Read What You Love, Anywhere You Like

Get Our FREE NOOK Reading Apps