Question: 17-28 Half Angle Formulas Use an appropriate Half-Angle Formula to find the exact value of the expression. 17. sin 15 18. tan 15

17-28 Half Angle Formulas Use an appropriate Half-Angle Formula to find the

17-28 Half Angle Formulas Use an appropriate Half-Angle Formula to find the exact value of the expression. 17. sin 15 18. tan 15

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