Question: If vec ( v ) vec ( w ) = 3 vec ( i ) vec ( j ) 4 vec ( k ) and

If vec(v)vec(w)=3vec(i) vec(j)4vec(k) and vec(v)*vec(w)=5, and is the angle between vec(v) and vec(w), then
(a)tan=
v
(b)=
If vec ( v ) vec ( w ) = 3 vec ( i ) vec ( j ) 4

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