I think every angle below 90 degrees
Answer:
Step-by-step explanation:
4
slope = (y2 - y1)/(x2 - x1)
4/3 = (-3 - r)/(2 - 5)
4/3 = (-3 - r)/(-3)
-4 = -3 - r
-1 = -r
r = 1
7b / 12 = 4.2
multiply both sides by 12
7b = 50.4
divide both sides by 7 to isolate b
b = 7.2
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