- #1
onemic
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Homework Statement
Find the angle of inclination of a line when the slope, m, is equal to -1/2
Homework Equations
m = rise/run = tan(φ)
φ=angle of inclination
The Attempt at a Solution
I thought the answer would simply be using arctan on the slope, but my answer gives me -26.565051 degrees when the answer is supposed to be 153 degrees:
arctan(-1/2) = 26.565051