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Mathematics
Problem
a
×
(
b
×
c
)
\mathbf{a} \times (\mathbf{b} \times \mathbf{c})
a
×
(
b
×
c
)
is coplanar with a.
b
\mathbf{b}
b
and
c
\mathbf{c}
c
b.
c
\mathbf{c}
c
and
a
\mathbf{a}
a
c.
a
\mathbf{a}
a
and
b
\mathbf{b}
b
d.
a
\mathbf{a}
a
,
b
\mathbf{b}
b
and
c
\mathbf{c}
c
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