Material Detail

This is a free, online textbook offered by CK-12 Foundation.  Although designed for high school students, it could also be used by college freshmen.  Chpater topics include the following: 

1. Trigonometry and Right Angles

2. Circular Functions

3. Trigonometric Identities

4. Inverse Functions and Trigonometric Equations

5. Triangles and Vectors

6. Polar Equations and Complex Numbers

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