Practicing Success

Target Exam

CUET

Subject

-- Mathematics - Section B1

Chapter

Vectors

Question:

If $\begin{bmatrix}\vec a×\vec b &\vec b×\vec c& \vec c×\vec a\end{bmatrix}=λ[\vec a\,\,\vec b\,\,\vec c]^2$, then λ is equal to

Options:

0

1

2

3

Correct Answer:

1

Explanation:

We know that

$\begin{bmatrix}\vec a×\vec b &\vec b×\vec c& \vec c×\vec a\end{bmatrix}=λ[\vec a\,\,\vec b\,\,\vec c]^2$. Therefore,

$\begin{bmatrix}\vec a×\vec b &\vec b×\vec c& \vec c×\vec a\end{bmatrix}=λ[\vec a\,\,\vec b\,\,\vec c]^2$ gives λ = 1.