This document discusses trigonometric identities and provides examples to simplify trigonometric expressions using fundamental identities in terms of sine, cosine, or 1. It focuses on building an understanding of trigonometric functions from the basic sine and cosine and expressing other trigonometric functions in terms of those.

9. Pre-Cal 40S (Fall '07)
Trigonometric Identities
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12. DICTIONARY
Trigonometric Identities
The basic building blocks of all the trigonometric functions are the sine
(sin θ) and cosine (cos θ) functions.
The Fundamental Identities ...

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

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

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