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Home  /  Precalculus: CTF (5e, High School Edition)  /  Chapter 8 · Applications of Trigonometric Functions
Section 8.3

The Law of Cosines

Law of cosines for oblique triangles.

3 lessons. Pick what you need.

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Chapter 8 · Applications of Trigonometric Functions
8.1 8.2 8.3
Lesson

Lesson on the Law of Cosines

Guided Notes Guided Notes (Word Version)
Examples

Examples on the Law of Cosines with an SSS Triangle

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Lesson

Lesson on Heron's Formula for the Area of a Triangle

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