Section 5.3 Sum_Difference.pdf

# Section 5.3 Sum_Difference.pdf - Section 5.3 Sum and...

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Section 5.3 Sum and Difference Formulas A. Sum and Difference Formulas Ex. 1 Find the exact values of cos 𝜋 12 by using 𝜋 12 = 𝜋 3 𝜋 4 . Ex. 2: Find the exact value of cos 75 0 by using 75° = 49° + 30°. Ex. 3: Find the exact value of sin(45° + 30°).

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Ex. 4: Find the exact value of tan 225°. Ex. 5: Find the exact value of tan 17𝜋 12 . Ex. 6: Find the exact value of the expression without a calculator. cos 57° cos 33° − sin 57 ° sin33 °
Ex. 7: Find the exact value of the expression given that
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