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Lines with slopes 1/2 and 1/3 meet at an acute angle. What is the tangent of that angle?
A1/7
B1/6
C5/6
D1/5
Answer & Solution
Correct answer: A. 1/7
tan A = |(m1 - m2)/(1 + m1 m2)| = (1/6)/(7/6) = 1/7.
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