Mathematics, 27.12.2020 08:10 slawson4328

Show that a vector $u = x _{1}i + y_{1}j + z_{1}k$
with direction cosines (cos α, cos β, cos gamma) can be written as

$u = |u| ( \cos \alpha i + \cos\beta j + \cos \gamma k)$

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Show that a vector
with direction cosines (cos α, cos β, cos gamma) can be written as
...

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