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Pc 5.5 notes_double_half

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Jonathan Fjelstrom
Jonathan Fjelstrom
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5.5: Double and Half Angle Formulas Double-Angle Formulas:
Ex. 1) Find the cos 2θ if sin θ=3/5 and 0<θ<π/2.
Ex. 2) Find the tan 2θ if cos θ=5/13 and 3π/2<θ<2π.
Ex. 3) Given the following information, find the exact value of the indicated trigonometric function.
Ex. 4) Given the following information, find the exact value of the indicated trigonometric function.
Ex. 5) Given the following information, find the exact value of the indicated trigonometric function.
Assignment: #25 p. 415 #3, 4, 19, 20, 25, 35, 36, 37, 42, 46, 56

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Pc 5.5 notes_double_half

  • 1. 5.5: Double and Half Angle Formulas Double-Angle Formulas:
  • 2. Ex. 1) Find the cos 2θ if sin θ=3/5 and 0<θ<π/2.
  • 3. Ex. 2) Find the tan 2θ if cos θ=5/13 and 3π/2<θ<2π.
  • 4.
  • 5. Ex. 3) Given the following information, find the exact value of the indicated trigonometric function.
  • 6. Ex. 4) Given the following information, find the exact value of the indicated trigonometric function.
  • 7. Ex. 5) Given the following information, find the exact value of the indicated trigonometric function.
  • 8.
  • 9. Assignment: #25 p. 415 #3, 4, 19, 20, 25, 35, 36, 37, 42, 46, 56