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Mathematics
Mathematics
Problem
The direction cosines of the line joining the points
(
4
,
3
,
−
5
)
(4, 3, -5)
(
4
,
3
,
−
5
)
and
(
−
2
,
1
,
−
8
)
(-2, 1, -8)
(
−
2
,
1
,
−
8
)
are (a)
(
6
7
,
2
7
,
3
7
)
\left(\frac{6}{7}, \frac{2}{7}, \frac{3}{7}\right)
(
7
6
,
7
2
,
7
3
)
(b)
(
2
7
,
3
7
,
6
7
)
\left(\frac{2}{7}, \frac{3}{7}, \frac{6}{7}\right)
(
7
2
,
7
3
,
7
6
)
(c)
(
6
7
,
3
7
,
2
7
)
\left(\frac{6}{7}, \frac{3}{7}, \frac{2}{7}\right)
(
7
6
,
7
3
,
7
2
)
(d) None of these
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