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Mathematics
Mathematics
Problem
If the angle between the vectors
a
\mathbf{a}
a
and
b
\mathbf{b}
b
be
θ
\theta
θ
and
a
⋅
b
=
cos
θ
\mathbf{a} \cdot \mathbf{b} = \cos \theta
a
⋅
b
=
cos
θ
, then the true statement is a.
a
\mathbf{a}
a
and
b
\mathbf{b}
b
are equal vectors b.
a
\mathbf{a}
a
and
b
\mathbf{b}
b
are like vectors c.
a
\mathbf{a}
a
and
b
\mathbf{b}
b
are unlike vectors d.
a
\mathbf{a}
a
and
b
\mathbf{b}
b
are unit vectors
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