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02-01-2024
Mathematics

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In triangle ABC, m∠ A=45°, m∠ B=40° , and a=7. Which equation should you solve to find b?

A. cos 45°/7 = cos 40°/b
B. sin 45°/b = sin 40°/7
C. b²=7²-2(7)bcos 40°
D. sin 45°/7 = sin 40°/b

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