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angle (5,2)
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Solution
arctan(25)
+2
Degrees
21.80140…◦
Decimal
0.38050…
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Angle from the x-axis
The angle between a vector, (
a
b
)andthepositivex−axisdependsonthequadrantthepointisin First Quadrant:θ=arctan(ba) Second Quadrant:θ=π−arctan(|ba|) Third Quadrant:θ=arctan(|ba|)−π Fourth Quadrant:θ=−arctan(|ba|)