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This Cosine Rule – Missing Sides instructional video also includes:
Not a right triangle, not a problem. Pupils learn about the cosine rule, or the law of cosines, to solve for missing side measures in triangles. They accomplish this task by watching a short video, which covers two examples.
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Concepts
Additional Tags
Instructional Ideas
- Use the video with learners having trouble with the concept
Classroom Considerations
- Knowledge of bearing is beneficial
- Scholars should be familiar with using their calculators to evaluate cosine
Pros
- Explains and shows each step in the solution process
Cons
- Does not address finding angles