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Mathematics
Mathematics
Problem
Find the angle between the two lines whose direction ratios are:
a
,
b
,
c
and
(
b
−
c
)
,
(
c
−
a
)
,
(
a
−
b
)
.
a, b, c \text{ and } (b-c), (c-a), (a-b).
a
,
b
,
c
and
(
b
−
c
)
,
(
c
−
a
)
,
(
a
−
b
)
.
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