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This Area of a Triangle – Sine/Trigonometry instructional video also includes:
Half the base times height was great for elementary school, but now we have a more general formula. Scholars watch a short video that highlights the area formula A = 1/2 ab sin C. The narrator works through an example of applying the formula to find the area of a triangle.
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CCSS:
Adaptable
Concepts
Additional Tags
Instructional Ideas
- Tell learners to draw triangles, and then have classmates measure sides and angles to calculate area
Classroom Considerations
- Pupils should be able to evaluate trigonometric functions using a calculator
- Note that the video only focuses on computations and does not explain why the formula works
Pros
- Includes a worksheet of additional problems
Cons
- Poor video quality