JEE Math Practice Question
If $${z_1}$$ and $${z_2}$$ are two non-zero complex numbers such that $$\,\left| {{z_1} + {z_2}} \right| = \left| {{z_1}} \right| + \left| {{z_2}} \right|$$, then arg $${z_1}$$ - arg $${z_2}$$ is equal to :
- A.$${\pi \over 2}\,$$
- B.$$ - \pi $$
- C.0
- D.$${{ - \pi } \over 2}$$
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