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Do Now: Verify the identity.

Do Now: Verify the identity. Academy Algebra II/Trig 8.5: (PC 5.5): Multiple-Angle and Product-Sum. HW:p.643-644 (. Double-Angle Formulas. Half-Angle Formulas. p.418: Use the figure to find the exact value of the trig function.

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Do Now: Verify the identity.

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  1. Do Now: Verify the identity.

  2. Academy Algebra II/Trig8.5: (PC 5.5): Multiple-Angle and Product-Sum HW:p.643-644 (

  3. Double-Angle Formulas

  4. Half-Angle Formulas

  5. p.418: Use the figure to find the exact value of the trig function.

  6. p.418: Use the figure to find the exact value of the trig function.

  7. Use to find

  8. Find all solutions:

  9. Use to find

  10. Verify:

  11. Rewrite the expression using a double-angle formula.

  12. Rewrite the expression using a double-angle formula.

  13. 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

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