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Find the angle between lines AB and AC where the point A(4,2,2), the point B(-5, 7, 7), and the point C(7,8,6) Angle = 84.6071

Find the angle between lines AB and AC where the point A(4,2,2), the point B(-5, 7, 7), and the point C(7,8,6) Angle = 84.6071

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