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Mathematics
Mathematics
Problem
A line
L
1
L_1
L
1
makes an angle of
30
∘
30^{\circ}
3
0
∘
with the positive direction of the
x
x
x
-axis. A second line
L
2
L_2
L
2
is perpendicular to
L
1
L_1
L
1
. Find the acute angle that
L
2
L_2
L
2
makes with the positive direction of the
x
x
x
-axis.
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