If two vectors 3i^+3j^+9k^ and i^+aj^+3k^ are parallel, then the value of a is

A⇀=3i^+3j^+9k^ B⇀=i^+aj^+3k^a1a2=b1b2=c1c2=constantWe know if two vectors are parallel then31=3a=93⇒a=1

If two vectors 3i^+3j^+9k^ and i^+aj^+3k^ are parallel, then the value of a is

A⇀=3i^+3j^+9k^ B⇀=i^+aj^+3k^a1a2=b1b2=c1c2=constantWe know if two vectors are parallel then31=3a=93⇒a=1

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If two vectors $3 \hat{i} + 3 \hat{j} + 9 \hat{k}$ and $\hat{i} + a \hat{j} + 3 \hat{k}$ are parallel, then the value of a is

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$\overset{⇀}{A} = 3 \hat{i} + 3 \hat{j} + 9 \hat{k}$ $\overset{⇀}{B} = \hat{i} + a \hat{j} + 3 \hat{k}$

$\frac{a_{1}}{a_{2}} = \frac{b_{1}}{b_{2}} = \frac{c_{1}}{c_{2}} = constant$

We know if two vectors are parallel then

$\frac{3}{1} = \frac{3}{a} = \frac{9}{3} \Rightarrow a = 1$

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If two vectors 3i^+3j^+9k^ and i^+aj^+3k^ are parallel, then the value of a is

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If two vectors $3 \hat{i} + 3 \hat{j} + 9 \hat{k}$ and $\hat{i} + a \hat{j} + 3 \hat{k}$ are parallel, then the value of a is