Trigonometric identities and equations Sum and difference identities

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Copyright © 2013, 2009, 2005 Pearson Education, Inc. 1 5 Trigonometric Identities.

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Presentation transcript:

Trigonometric identities and equations Sum and difference identities 7-3 Trigonometric identities and equations Sum and difference identities

Objectives Use the difference identities for the sine, cosine, and tangent functions.

Warm-up

Check Up

Sum and Difference Identities for Cosine Functions

Example 1

Example 1 Cont.

You Try!!!

You Check!!!

Example 2

You Try!

You Check!!!

Sum and Difference Identities for Sine Functions

Example 3

You Try!!!

You Check!!!

Sum and Difference Identities for Tan Functions

Example 4

You Try!!!

You Check!!!

Example 5

You Try!!!