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If vec(A) = (2,-3,1) and vec(B) = (3,4,n...

If `vec(A) = (2,-3,1) and vec(B) = (3,4,n)` are mutually perpendicular then find the value of n .

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`vec(A) bot vec(B)`
` :. vec(A) .vec(B) = 0 `
` :. (2) (3) +(-3)(4) +(1)(n) = 0 `
` :. n = 6 `
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