If A- -2- -3- -8k- is perpendicular to B- -4- -4- -k- then the value of - - is

The correct option is D 1 2 Vectors A⃗ and B⃗ are perpendicular to each other. ∴ #160; A⃗.B⃗ =0 Or #160; (2î + 3ĵ + 8k̂). ...

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If A⃗ =2î +...

Question

If $\to A = 2^i + 3^j + 8^k$ is perpendicular to $\to B = 4^j - 4^i + α^k$ , then the value of ' $α$ ' is

1

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\frac{1}{2}

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- 1

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\frac{1}{- 2}

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If a vector $2^i + 2^j + 8^k$ is perpendicular to the vector $4^j - 4^i + α^k$ ,then the value of \alpha is:

\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 = 4^i + 5^j - 3^k

\to b = 5^i + 3^j + 8^k

\frac{projection of vector b on a}{projection of vector a on b}

\to a = 3^i + 4^j

\to b = 2^i - 3^j

(\to a + \to b) . (\to a - \to b)

\to a = 2^i + 5^j + 8^k, \to b =^i + 3^j + 7^k

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

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

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