Find the angle between the lines y=2x+1y = 2x + 1y=2x+1 and y=3x−2y = 3x - 2y=3x−2.
arctan(37)\arctan(\frac{3}{7})arctan(73)
arctan(17)\arctan(\frac{1}{7})arctan(71)
arctan(27)\arctan(\frac{2}{7})arctan(72)
arctan(15)\arctan(\frac{1}{5})arctan(51)