### Lesson Details

**Name:**Cosine Rule 2**Code:**M.4.11.T2.7**Specification Reference:**G22**Keywords:**Angle, side, cosine, formula, substitute, inverse, perimeter.**Objectives:**1. To understand how to rearrange the cosine rule to find an angle. 2. To apply the cosine rule to find missing angles. 3. To solve worded problems using the cosine rule.**Competency:**To understand how to rearrange the cosine rule to find an angle.**Proficiency:**To apply the cosine rule to find missing angles.**Mastery:**To solve worded problems using the cosine rule.

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