Do Now: Verify the identity.

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Do Now Verify the identity.
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Academy Algebra II/Trig 8.5 (PC 5.5)
Multiple-Angle and Product-Sum

• HWp.643-644 (

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Double-Angle Formulas
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Half-Angle Formulas
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p.418 Use the figure to find the exact value of
the trig function.
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p.418 Use the figure to find the exact value of
the trig function.
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Use
to find
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Find all solutions
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Use
to find
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Verify
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Rewrite the expression using a double-angle
formula.
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Rewrite the expression using a double-angle
formula.
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Review for Test p.422-423 (15-22, 25-94), p.424
(100, 102, 103)

• Verify Identities
• Solve Equations
• Use sum and difference formulas
• Find exact values of trig functions using sum and
  difference formulas, double-angle, and half-angle
  formulas