JEE Math Practice Question
Each of the angles $\beta$ and $\gamma$ that a given line makes with the positive $y$ - and $z$-axes, respectively, is half of the angle that this line makes with the positive $x$-axes. Then the sum of all possible values of the angle $\beta$ is
- A.$\frac{\pi}{2}$
- B.$\pi$
- C.$\frac{3 \pi}{4}$
- D.$\frac{3 \pi}{2}$
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