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Question
Find a unit vector in the opposite direction of `baru`. Where `baru = 8hati + 3hatj- hatk`
Sum
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Solution
Required vector = `(-baru)/|baru|`
= `-(8hati + 3hatj - k)/sqrt(64 + 9 + 1)`
= `(-8hati - 3hatj + k)/sqrt(74)`
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