Question: Find the length and direction ( when defined ) of u v and v u . u = 7 i - 2 j - 6

Find the length and direction (when defined) of uv and vu.
u=7i-2j-6k,v=6i-6k
The length of uv is
(Type an exact answer, using radicals as needed.)
Find the length and direction ( when defined ) of

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