Trigonometric Identities

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Hints for Verifying <strong>Identities</strong> It is sometimes helpful to express all trigonometric functions in the equation in terms of sine and cosine and then simplify the result. Usually, any factoring or indicated algebraic operations should be performed. For example, the expression can be factored as Copyright © 2009 Pearson Addison-Wesley 1.1-5 5.2-5
Hints for Verifying <strong>Identities</strong> The sum or difference of two trigonometric expressions such as can be added or subtracted in the same way as any other rational expression. Copyright © 2009 Pearson Addison-Wesley 1.1-6 5.2-6
Page 1 and 2: 5 Trigonometric Identities Copyrigh
Page 3 and 4: 5.1 Fundamental Identities Fundamen
Page 5 and 6: Fundamental Identities Pythagorean
Page 7 and 8: Example 1 If and θ is in quadrant
Page 9 and 10: Example 1 (b) cot(- θ) Copyright
Page 11 and 12: Example 2 Express cos x in terms of
Page 13 and 14: Caution When working with trigonome
Page 15 and 16: 5 Trigonometric Identities 5.1 Fund
Page 17: Hints for Verifying Identities Lea
Page 21 and 22: Hints for Verifying Identities If
Page 23 and 24: Verifying Identities by Working wit
Page 25 and 26: Example 2 Copyright © 2009 Pearson
Page 31 and 32: Example 5 Right side of given equat
Page 37 and 38: 5.3 Sum and Difference Identitites
Page 39 and 40: Difference Identity for Cosine Sinc
Page 41 and 42: Difference Identity for Cosine Subt
Page 43 and 44: Cosine of a Sum or Difference Copyr
Page 45 and 46: Example 1(b) Find the exact value o
Page 47 and 48: Cofunction Identities Similar ident
Page 51 and 52: Applying the Sum and Difference Cop
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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Sum and Difference Identities for T
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Example 1(a) Find the exact value o
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Example 1(c) Find the exact value o
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Example 3 Copyright © 2009 Pearson
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5 Trigonometric Identities Copyrigh
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5.5 Double-Angle Identities Double-
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Copyright © 2009 Pearson Addison-W
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Example 4 Simplify each expression.
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Example 6 where V is the voltage an
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5 Trigonometric Identities 5.1 Fund
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Double-Angle Identities Copyright
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Example 5 VERIFYING AN IDENTITY Ver
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Trigonometric Identities

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