1. 5.5 Multiple-Angle
Formulas
Essential Question:
How do you evaluate double and half angle formulas?
Standard: Trig 11.0
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2. 5.5: Double and Half
Angle Formulas
Double­Angle Formulas:
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3. Ex. 1﴿ Find the cos 2θ if sin θ=3/5 and
0<θ<π/2.
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4. Ex. 2﴿ Find the tan 2θ if cos θ=5/13 and
3π/2<θ<2π.
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6. Ex. 3﴿ Given the following information, find the
exact value of the indicated trigonometric
function.
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7. Ex. 4﴿ Given the following information, find the
exact value of the indicated trigonometric
function.
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8. Ex. 5﴿ Given the following information, find the
exact value of the indicated trigonometric
function.
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9. Ex. 6) Evaluate tan 67.5o
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10. Assignment:
5.5 p. 415
#3, 4, 19, 25, 35, 36, 37, 42, 45, 51
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