High School Trigonometry/Fundamental Identities

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Reciprocal Identities[edit]

Pythagorean Identities[edit]

Quotient Identities[edit]

Co-Function Identities[edit]

Even-Odd Identities[edit]

This material was adapted from the original CK-12 book that can be found here. This work is licensed under the Creative Commons Attribution-Share Alike 3.0 United States License