|v| =√3²+(-3)²+3²
= √9+9+9
= √27
=3√3
u.v = (3x(-2)) + (-3x4) + (3x(-6))
= -6 -12 - 18
= -36
|u v| = |u.v/lvl|
= -36/3√3
= -12/√3
= -12√3/3
= -4√3
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|v| =√3²+(-3)²+3²
= √9+9+9
= √27
=3√3
u.v = (3x(-2)) + (-3x4) + (3x(-6))
= -6 -12 - 18
= -36
|u v| = |u.v/lvl|
= -36/3√3
= -12/√3
= -12√3/3
= -4√3