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Mathematics
Problem
The angle between the X-axis and the line joining the points
(
3
,
−
1
)
(3, -1)
(
3
,
−
1
)
and
(
4
,
−
2
)
(4, -2)
(
4
,
−
2
)
is (a)
45
∘
45^\circ
4
5
∘
(b)
135
∘
135^\circ
13
5
∘
(c)
90
∘
90^\circ
9
0
∘
(d)
180
∘
180^\circ
18
0
∘
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