Here $|\overrightarrow{\mathrm{a}}|=3,|\overrightarrow{\mathrm{~b}}|=4$ resultant $\overrightarrow{\

Question

Here $|\overrightarrow{\mathrm{a}}|=3,|\overrightarrow{\mathrm{~b}}|=4$ resultant $\overrightarrow{\mathrm{R}}$ makes an angle $\alpha$ with $\overrightarrow{\mathrm{a}}$. Then value of $\alpha$ is

Professor PC Thomas Classes · Answer

The angle $\alpha$ made by the resultant with vector $\vec{a}$ is given by $	an\alpha = \frac{b\sin	heta}{a+b\cos	heta}$.