Find a unit vector perpendicular to both A? = 3i + 2j and B? = i - 2j + 2k A)(2i-3j+3k)/?6 B)(2i-3j-4k)/?29 C)(2i-3j-3k)/?6 D)(2i-3j+3k)/?53 E)(-2i-3j+3k)/?6
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A x B = (3i + 2j) x (i - 2j + 2k) = (3i + 2j) x i - (3i + 2j) x 2j + (3i + 2j) x 2k = (6k - 4k) - (6i - 4i) + (6j - 2j) = 2k - 2i + 4j Show more…
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