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Lesson Planet
Demonstrate the derivation of the trigonometric area formula for a triangle. Using the base/height formula and the sine ratio, the lesson instructor demonstrates how to combine the two and create the formula A = 1/2absinC. The video shows both the labeled triangle and the algebraic steps.
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CCSS:
Adaptable
Additional Tags
Instructional Ideas
- Post the videos in this series as review aids before a test
Classroom Considerations
- Expects a solid understanding of area and trigonometric ratios
- YouTube comments may contain inappropriate material
- This video is hosted on YouTube
Pros
- Includes visuals to accompany the algebraic steps
- Uses color coding to increase clarity
Cons
- None