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If a vector 2i + 3j + 8k is perpendicular to the vector 4i - 4j + αk, then value of α is

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If a vector 2i + 3j + 8k is perpendicular to the vector 4i - 4j + αk, then value of α is

(a) -1

(b) 1/2

(c) -1/2

(d) 1

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1 Answer

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Best answer

Correct option (b) 1/2

Explanation :

For perpendicular vectors,  A.B = 0

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