First slide

Vectors

Question

Two vector $2 \hat{i} + 3 \hat{j} - \hat{k}$ and $- 4 \hat{i} - 6 \hat{j} + λ \hat{k}$ are parallel to each other then value of $λ$ will be

Moderate

A

0
B

2
C

3
D

4

Solution

$\begin{array}{l} \vec{A} | | \vec{B} \\ \frac{A_{x}}{B_{x}} = \frac{A_{y}}{B_{y}} = \frac{A_{z}}{B_{z}} = k \end{array}$

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