Question

If $\theta$ is the angle between the vectors $2 \hat{i} - 2 \hat{j} +4 \hat{k}$ and $3 \hat{i} + \hat{j} + 2 \hat{k}$, then value of sin $\theta$ is:

• A. $\frac{2}{3}$
• B. $\frac{2}{\sqrt {7}}$
• C. $\frac{\sqrt {2}}{7}$
• D. $\sqrt{\frac{2}{7}}$

Answer 1

Answer: (B)

$\frac{2}{\sqrt {7}}$

Answer 2

The correct option is (B): $\frac{2}{\sqrt {7}}$