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Mathematics
Mathematics
Problem
If
∣
a
∣
=
2
|\mathbf{a}| = 2
∣
a
∣
=
2
,
∣
b
∣
=
5
|\mathbf{b}| = 5
∣
b
∣
=
5
and
∣
a
×
b
∣
=
8
|\mathbf{a} \times \mathbf{b}| = 8
∣
a
×
b
∣
=
8
, then find the value of
a
⋅
b
\mathbf{a} \cdot \mathbf{b}
a
⋅
b
.
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