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Home  /  Precalculus with Trigonometry by Topic  /  Chapter 11 · Applications of Trigonometry and Vectors
Section 11.3

The Law of Cosines

An explanation of the Law of Cosines and Heron's Formula for the area of a triangle

3 lessons. Pick what you need.

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Chapter 11 · Applications of Trigonometry and Vectors
11.1 11.2 11.3 11.4 11.5
Lesson

Lesson on the Law of Cosines

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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

Guided Notes Guided Notes (Word Version)