1. 44 – Simplifying Trigonometric Expressions No Calculator
Trigonometric Investigations II
44 – Simplifying Trigonometric Expressions No Calculator

2. Directions
Simplify each expression to a single trigonometric function or constant. Show the work that leads to your answer.
Sample Answers

6. + + + _ _

8. Evaluate each of the following.

9. Evaluate each of the following.

12. Where do THESE come from?
One can’t memorize all of them.

14. The Fundamental Trigonometric Identities
The Trigonometric Co-Function Identities
The Pythagorean Trigonometric Identities