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This Finding Exact Trigonometric Values Using Double Angle Identities: Trig Values Using Double and Half Angle Formulas interactive also includes:
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The more you know, the more you can learn. Scholars apply the double angle and half angle formulas to determine trig values based on known values. They use an interactive that provides sine and cosine values to aid calculations.
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Concepts
Additional Tags
Instructional Ideas
- Use the last challenge question as a class discussion prompt
Classroom Considerations
- Must set up a free CK-12 account before use
- Learners should already have some knowledge of double angle and half angle formulas
Pros
- Comprehensive tutorial
Cons
- Title is a bit of a misnomer as learners are finding estimates, not exact values
- Challenge questions do not provide any explanations for incorrect answers