Trigonometric Identities

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Example 2 Copyright © 2009 Pearson Addison-Wesley 1.1-12 FINDING FUNCTION VALUES OF θ GIVEN INFORMATION ABOUT 2θ Find the values of the six trigonometric functions of θ if Use the identity to find sin θ: θ is in quadrant II, so sin θ is positive. 5.5-12
Example 2 Copyright © 2009 Pearson Addison-Wesley 1.1-13 FINDING FUNCTION VALUES OF θ GIVEN INFORMATION ABOUT 2θ (cont.) Use a right triangle in quadrant II to find the values of cos θ and tan θ. Use the Pythagorean theorem to find x. 5.5-13
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5 Trigonometric Identities Copyrigh
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5.1 Fundamental Identities Fundamen
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Fundamental Identities Pythagorean
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Example 1 If and θ is in quadrant
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Example 1 (b) cot(- θ) Copyright
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Example 2 Express cos x in terms of
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Caution When working with trigonome
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5 Trigonometric Identities 5.1 Fund
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Hints for Verifying Identities Lea
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Hints for Verifying Identities The
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Hints for Verifying Identities If
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Verifying Identities by Working wit
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Example 2 Copyright © 2009 Pearson
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Example 5 Right side of given equat
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5 Trigonometric Identities Copyrigh
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5.3 Sum and Difference Identitites
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Difference Identity for Cosine Sinc
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Page 45 and 46: Example 1(b) Find the exact value o
Page 47 and 48: Cofunction Identities Similar ident
Page 49 and 50: Example 2 Copyright © 2009 Pearson
Page 51 and 52: Applying the Sum and Difference Cop
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Page 63 and 64: 5.4 Sum and Difference Identities f
Page 65 and 66: Sum and Difference Identities for S
Page 67 and 68: Sum and Difference Identities for T
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Page 71 and 72: Example 1(a) Find the exact value o
Page 73 and 74: Example 1(c) Find the exact value o
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Page 83 and 84: 5.5 Double-Angle Identities Double-
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Page 91: Example 1 Copyright © 2009 Pearson
Page 95 and 96: Example 4 Simplify each expression.
Page 97 and 98: Example 6 where V is the voltage an
Page 107 and 108: 5 Trigonometric Identities 5.1 Fund
Page 113 and 114: Double-Angle Identities Copyright
Page 119: Example 5 VERIFYING AN IDENTITY Ver
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Trigonometric Identities

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