Trigonometric Identities

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5.6 Half-Angle Identities Half-Angle Identities ▪ Applying the Half-Angle Identities Copyright © 2009 Pearson Addison-Wesley 1.1-3 5.6-3
Copyright © 2009 Pearson Addison-Wesley Half-Angle Identities We can use the cosine sum identities to derive halfangle identities. Choose the appropriate sign depending on the quadrant of 5.6-4
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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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Difference Identity for Cosine Subt
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Cosine of a Sum or Difference Copyr
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Example 1(b) Find the exact value o
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Cofunction Identities Similar ident
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Applying the Sum and Difference Cop
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Page 57 and 58: Example 5 Copyright © 2009 Pearson
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Page 63 and 64: 5.4 Sum and Difference Identities f
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Page 67 and 68: Sum and Difference Identities for T
Page 69 and 70: Sum and Difference Identities for T
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 95 and 96: Example 4 Simplify each expression.
Page 97 and 98: Example 6 where V is the voltage an
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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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