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Let vector a = 3i + 2j + 9k and vector b = i + mj + 3k. The value m of when vector a and b are parallel is

+3 votes

asked Feb 13, 2019 in Class 12 by kratos

Let vector a = 3i + 2j + 9k and vector b = i + mj + 3k. The value m of when vector a and b are parallel is

A. 2/3

B. 1

C. 2

D. 3/2

vector algebra
class-11
product of vectors
product of three vectors
cross or vector
vector
scalar or dot products
class-12

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1 Answer

+3 votes

answered Feb 12, 2021 by kratos

Best answer

Correct option: A. 2/3

Explanation:

Equating the coefficients, we have, mt = 2 and t = 3. Thus m = 2/3

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