CUET Preparation Today
The unit vector in xy-plane, making an angle of 60° with the positive direction of x-axis is : |
$\frac{1}{2}\hat{i}-\frac{\sqrt{3}}{2}\hat{j}$ $\frac{\sqrt{3}}{2}\hat{i}+\frac{1}{2}\hat{j}$ $\frac{1}{2}\hat{i}+\frac{\sqrt{3}}{2}\hat{j}$ $\frac{\sqrt{3}}{2}\hat{i}-\frac{1}{2}\hat{j}$ |
$\frac{1}{2}\hat{i}+\frac{\sqrt{3}}{2}\hat{j}$ |
The correct answer is Option (3) → $\frac{1}{2}\hat{i}+\frac{\sqrt{3}}{2}\hat{j}$
so $\hat v=\sin 60°\hat j+\cos 60°\hat i$ $\hat v=\frac{1}{2}\hat i+\frac{\sqrt{3}}{2}\hat j$ |
