youngandeducated youngandeducated

25-04-2018
Mathematics

contestada

The vertices of a triangle are A(7, 5), B(4, 2), and C(9, 2). What is m°

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goodwinvivian0 goodwinvivian0

25-04-2018

slope of AB = (5 - 2)/(7 - 4) = 3/3 = 1
slope of BC = (2 - 2)/(4 - 9) = 0

m∠ABC = arctan 1 = 45°

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