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The addition formula for sine and cosine
Activity
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Demonstration of the law of cosines
Activity
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The unit circle and graphs of trigonometric functions
Activity
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The unit circle and graphs of trigonometric functions
Activity
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Derivatives of sine and cosine
Activity
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The Cosine Theorem
Activity
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Trigonometry in a right-angled triangle
Activity
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Trigonometry in a unit circle
Activity
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Trigonometry in a general triangle
Activity
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The subtraction formula for the cosine
Activity
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