Practicing Success

Target Exam

CUET

Subject

-- Mathematics - Section B1

Chapter

Vectors

Question:

The value of $\frac{3}{2}(\hat{i}.\hat{i})+\frac{1}{2}(\hat{j}.\hat{j})+\frac{|\hat{i}×\hat{i}|}{(\hat{k}.\hat{k})}+\frac{(\hat{k}.\hat{i})}{|\hat{i}×\hat{j}|}$ is :

Options:

$\frac{5}{2}$

0

2

-2

Correct Answer:

2

Explanation:

The correct answer is Option (3) → 2

$\frac{3}{2}(\hat{i}.\hat{i})+\frac{1}{2}(\hat{j}.\hat{j})+\frac{|\hat{i}×\hat{i}|}{(\hat{k}.\hat{k})}+\frac{(\hat{k}.\hat{i})}{|\hat{i}×\hat{j}|}$

$=\frac{3}{2}+\frac{1}{2}+0+0=2$