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Sum and Difference Identities




 
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More Lessons for PreCalculus

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Videos, worksheets, solutions, and activities to help PreCalculus students learn about the sum and difference identities for sine, cosine and tangent.

Identities for Sums and Differences of Angles

Sum and Difference Identities for Sine
Use the sum and difference sine identities to determine function values.
Sum and Difference Identities for Cosine
Use the sum and difference cosine identities to determine function values.



Sum and Difference Identities for Tangent
Use the sum and difference tangent identities to determine function values.
Sum and Difference Identities for Sine and Cosine.
More examples of using the sum and difference identities to find value other trig values.


 


Using the Sum and Difference Identities for Sine, Cosine and Tangent, Ex 1
Using the Sum and Difference Identities for Sine, Cosine and Tangent, Ex 2


 
Using the Sum and Difference Identities for Sine, Cosine and Tangent, Ex 3

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