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Mathematics
Mathematics
Problem
Find the angle between the lines whose
direction cosines are
(
−
3
4
,
1
4
,
−
3
2
)
and
\text{direction cosines are } \left( -\frac{\sqrt{3}}{4}, \frac{1}{4}, -\frac{\sqrt{3}}{2} \right) \text{ and}
direction cosines are
(
−
4
3
,
4
1
,
−
2
3
)
and
(
−
3
4
,
1
4
,
3
2
)
.
\left( -\frac{\sqrt{3}}{4}, \frac{1}{4}, \frac{\sqrt{3}}{2} \right).
(
−
4
3
,
4
1
,
2
3
)
.
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