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This Solving Problems Using Sine and Cosine lesson plan also includes:
- Similarity, Proof, and Trigonometry - Module Overview (PDF)
- Similarity, Proof, and Trigonometry - Module Overview (Doc)
- Solving Problems Using Sine and Cosine (Doc)
- Solving Problems Using Sine and Cosine (PDF)
- Solving Problems Using Sine and Cosine (Doc)
- Assessment
- Answer Key
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Concepts are only valuable if they are applicable. An informative resource uses concepts developed in lessons 26 and 27 in a 36-part series. Scholars write equations and solve for missing side lengths for given right triangles. When given a non-right triangle, pupils must develop a plan to find the missing length.
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CCSS:
Designed
Concepts
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Instructional Ideas
- Require learners to draw a triangle for each example and write an equation before finding a solution
- Create collaborative groups to tackle the opening activity, and have them explain their strategies
Classroom Considerations
- Pupils should be comfortable solving similar equations; review may be necessary depending on ability or experiences
Pros
- Non-examples are used to ensure high schoolers understand that the Pythagorean Theorem and trigonometric ratios apply only to right triangles
- Includes a teacher guide with detailed explanations and suggestions for scaffolding
Cons
- None