SOLUTION: let L1 and L2 be the line passing through (1,-2) and(4,1), and L2 is the line containing (2,4) and (6,5). Find it an angle between L1 and L2.

Question 370389: let L1 and L2 be the line passing through (1,-2) and(4,1), and L2 is the line containing (2,4) and (6,5). Find it an angle between L1 and L2.
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
let L1 and L2 be the line passing through (1,-2) and(4,1), and L2 is the line containing (2,4) and (6,5). Find it an angle between L1 and L2.
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Slope of L1 = diffy/diffx = 3/3 = 1
Slope of L2 = 1/4
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The slope is the tangent of the angle between the line and the x-axis
L1 is 45�
L2 =~ 14�
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Angle between L1 & L2 = 31� (the acute angle)
It's also the supplement, 149�

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