If a-i-j-k and b-2i-j-3k- then the unit vector along a-b is-

The correct option is D None of these a + b=3i 2j+4k ∴ Required unit vector #160; a+b|a+b|=3i 2j+4k√(3^2 + ( 2)^2+4^2)= 3i 2j+4k√(29) ...

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If a=i-j+k ...

Question

If $\to a = ˆ i - ˆ j + ˆ k$ and $\to b = 2 ˆ i - ˆ j + 3 ˆ k,$ then the unit vector along $\to a + \to b$ is:

\frac{3 i + 4 k}{5}

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- \frac{3 i + 4 k}{5}

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\frac{- 3 i - 4 k}{5}

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None of these

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Similar questions

- i - 3 j + 4 k

2 i + j - 4 k, 2 i - j + 3 k

3 i + j - 2 k

2 ¯ i - 3 ¯ j + 4 ¯ ¯ ¯ k, ¯ i - 2 ¯ j + 3 ¯ ¯ ¯ k

3 ¯ i + ¯ j - 2 ¯ ¯ ¯ k

a = 3 i + 3 j + 4 k, b = i + j + k

c = 4 i + 2 j + 3 k

\frac{1}{5 \sqrt{2}} | a \times (b \times c) |

If \vec{a} = 3 \hat{i} - \hat{j} - 4 \hat{k}, \vec{b} = - 2 \hat{i} + 4 \hat{j} - 3 \hat{k} and \vec{c} = \hat{i} + 2 \hat{j} - \hat{k}, find |3 \vec{a} - 2 \vec{b} + 4 \vec{c}| .

2 \hat{i} + \hat{j} - \hat{k}, 3 \hat{i} - 2 \hat{j} + \hat{k} and \hat{i} + 4 \hat{j} - 3 \hat{k}

3 \hat{i} - 2 \hat{j} + 4 \hat{k}, \hat{i} + \hat{j} + \hat{k} and - \hat{i} + 4 \hat{j} - 2 \hat{k}

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