Trigonometric Functions

Unit circle, trigonometric functions, identities, and equations

This section contains 5 topics with 0 subtopics, 6 practice problems and 25 flashcards. Each topic includes comprehensive written notes, worked examples with detailed solutions, and interactive lessons for hands-on practice.

Topics Covered

• Unit Circle and Radian Measure (Combined - See Split Topics) — This topic has been split into three focused topics: Degrees and Radians, Arc Length and Sector Area, and The Unit Circle.
• Degrees and Radians — Learn how to convert between degrees and radians, and understand radian measure.
• Trigonometric Identities — Fundamental trigonometric identities including Pythagorean, reciprocal, quotient, and even-odd identities
• Arc Length and Sector Area — Calculate arc lengths and sector areas using radian measure.
• The Unit Circle — Master the unit circle, special angles, reference angles, and the CAST rule.

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