# Trigonometry: Trigonometric Identities I

## introduction

Mobile Devices:

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Workbook:

Download and print the Trigonometric Identities I Workbook.

Interactive Graphs:

All of the Trigonometric Identities I Graphs are interactive on Desmos.

Lesson Transcript:

All of the Trigonometric Identities I Notes are available as a video transcript.

Topics Covered:

- trigonometric proofs.
- the three Pythagorean identities.
- non-permissible values of trigonometric functions.
- non-permissible values and trigonometric graphs.
- solving trigonometric equations with identities.

WNCP Curriculum Connection: Trigonometry, Specific Outcome 6

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