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Math · Trigonometry
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PLEASE write in short. 73 and 75 only please do bothWriting Products as Sums In Exercises 69-76, use the product-to-sum formulas to write the product as a sum or difference. π π 70. 69.6 sin cos 71. sín 5θ cos 3θ 73. 10 cos 75° cos 15°74. 3 6 in 3 10 cos 75° cos 150 74. sin(x + y) sin(x - y

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