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Mathematics
Mathematics
Problem
5. Find the direction cosines of the sides of the triangle whose vertices are
(
3
,
5
,
−
4
)
,
(
−
1
,
1
,
2
)
(3,5,-4),(-1,1,2)
(
3
,
5
,
−
4
)
,
(
−
1
,
1
,
2
)
and
(
−
5
,
−
5
,
−
2
)
(-5,-5,-2)
(
−
5
,
−
5
,
−
2
)
.
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