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Mathematics
Mathematics
Problem
Explain why simply taking
arctan
(
v
y
v
x
)
\arctan\left(\dfrac{v_y}{v_x}\right)
arctan
(
v
x
v
y
)
may give the wrong directional angle for a vector when either
v
x
v_x
v
x
or
v
y
v_y
v
y
is negative.
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