If a-2-4-5k- b-k-c-2k- then the unit vectors parallel to a-b-c- is

The correct option is A ±17(3î+6ĵ 2k̂) Let V⃗=a⃗+b⃗+c⃗=3î+6ĵ 2k V̂=V⃗ | V⃗ |= ±17(3î+6ĵ 2k̂) ...

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Unit Vectors

If a⃗=2î+4ĵ...

Question

If $\to a = 2^i + 4^j - 5^k, \to b =^i +^j +^k, \to c =^j + 2^k$ , then the unit vectors parallel to $\to a + \to b + \to c$ is

\pm \frac{1}{7} (3^i + 6^j - 2^k)

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(3^i + 6^j - 2^k)

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\pm \frac{1}{7} (3^i + 6^j + 2^k)

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(3^i + 6^j + 2^k)

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Solution

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Similar questions

\to a = 3^i - 2^j +^k,

\to b = 2^i - 4^j - 3^k, \to c = -^i + 2^j + 2^k

\to a + \to b + \to c = 4^i - 4^j

\to a =^i -^j + 2^k, \to b = 2^i + 3^j +^k, \to c =^i -^k

\to a + 2 \to b - 3 \to c

\sqrt{78}

\to a = 1 / 7 (2^i + 3^j + 6^k)

\to b = 1 / 7 (3^i - 6^j + 2^k)

\to c = 1 / 7 (6^i + 2^j - 3^k)

\to A =^i - 2^j + 2^k, \to B = 2^i +^j -^k

\to C = 3^i -^j + 2^k

\to a = 2^i +^j + 3^k, \to b = -^i + 2^j +^k

\to c = 3^i +^j + 2^k

\to a \cdot (\to b \times \to c)

\to a \cdot (\to b \times \to c)

\to a = 2^i +^j + 3^k, \to b = -^i + 2^j +^k

\to c = 3^i +^j + 2^k .

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