Introduction to trig identities.

1. Happy π Day!
Pi Pie by megpi

2. Identities
hair by bunchofpants

3. Trigonometric Identities
The basic building blocks of all the trigonometric functions are the sine
(sin θ) and cosine (cos θ) functions.
The Fundamental Identities ...

4. Simplify each of the following so that it is expressed exclusively in terms
of sine, cosine or the number 1.

5. Simplify each of the following so that it is expressed exclusively in terms
of sine, cosine or the number 1.

6. Simplify each of the following so that it is expressed exclusively in terms
of sine, cosine or the number 1.