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Having trouble remembering the trigonometric ratios of the common angles? Here's a video for you! The lesson instructor demonstrates a hand trick that helps individuals determine the correct trigonometric ratios. The trick works for sine, cosine, and tangent of 0-, 30-, 45-, 60-, and 90-degree angles.
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CCSS:
Adaptable
Concepts
Additional Tags
Instructional Ideas
- Create a guided notes document for learners to complete as they watch the lesson
Classroom Considerations
- If assigning for independent viewing, ensure class members have Internet access at home
- Relies on prior knowledge of trigonometric ratios
- This video is hosted on YouTube
Pros
- Allows time for pupils to practice as they watch the video
- Provides a visual animation to add clarity
Cons
- Method in the video promotes memorization rather than understanding