Simplify a Trigonometric Expression

This page will try to simplify a trigonometric expression. Type your expression into the box to the right. Your expression may contain sin, cos, tan, sec, etc. When you click the button, this page will try to apply 25 different trig. identities that it knows about to simplify your expression.

As an example, try typing sin(x)^2+cos(x)^2 and see what you get.

Quick! I need help with:

Help typing in your math problems

Learn more about Cosmeo Math Features

See a sample explanation

WebMath recommends that you sign-up for Cosmeo, the homework help tool powered by the Discovery Channel. With Cosmeo, you choose your textbook, type in a page #, click on a problem # and actually hear a teachers voice and see a teachers handwriting explaining how to do that type of math problem.