Trigonometry Workbook For Dummies
Book image
Explore Book Buy On Amazon

The Pythagorean identities are building blocks for many of the manipulations of trigonometric equations and expressions. They provide a greater number of methods for solving trig problems more efficiently, because they allow you to write complicated expressions in a much simpler form.

The Pythagorean identities are

image0.png

The notation in these identities is peculiar to trigonometry.

image1.png

So they agreed on a condensed version: The superscript 2 right after “sin” means that you square the whole expression. The same type of notation also goes for the other functions.

About This Article

This article can be found in the category: