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Cosine Sum and Difference Identities by B - HERRERA, Jhian Carlo G. is a document available to read on EtoBox.

What is Cosine Sum and Difference Identities about?

The document provides instruction on cosine sum and difference identities. It includes: 1) An explanation of the difference identity for cosine, cos(α - β) = cosαcosβ + sinαsinβ, along with examples of using it to find values of cosine. 2) An explanation of the sum identity for cosine, cos(α + β) = cosαcosβ - sinαsinβ, which is derived from the difference identity. 3) Additional examples and problems involving using the sum and difference identities to evaluate expressions involving cosine.

Author

B - HERRERA, Jhian Carlo G.

Language

EN