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This What Is a Trigonometric Identity? lesson plan also includes:
Protect yourself from identity theft! Establishing a strong understanding of the Pythagorean identity allows learners to prove that sine^2x + cos^2x = 1. They then use the identity to find sine or cosine ratios given the other.
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CCSS:
Designed
Concepts
Additional Tags
Instructional Ideas
- Allow learners to review the Pythagorean Theorem using variables or expressions for side lengths
- Emphasize the effect of quadrants on the values of the sine and cosine ratios
Classroom Considerations
- Pupils should have a strong understanding of the unit circle and the trigonometric ratios
- The 16th in a 19-part series of trigonometry lessons
Pros
- Provides adaptation suggestions for ELL pupils
- Includes a set of practice problems for independent practice along with a worked-out solution guide
Cons
- None