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If a vector is perpendicular to the vector . Then the value of is
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a
-1
b
12
c
-12
d
1
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Correct option is C
Given vectors can be rewritten as A→=2i^+3j^+8k^ and B→=−4i^+4j^+αk^Dot product of these vectors should be equal to zero because they are perpendicular.∴A→⋅B→=−8+12+8α=0⇒8α=−4⇒α=−1/2Similar Questions
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