A) \[|{{z}_{1}}+{{z}_{2}}|\,\ge \,|{{z}_{1}}|+|{{z}_{2}}|\]
B) \[|{{z}_{1}}-{{z}_{2}}|\,\ge \,|{{z}_{1}}|+|{{z}_{2}}|\]
C) \[|{{z}_{1}}-{{z}_{2}}|\,\le \left| \,|{{z}_{1}}|-|{{z}_{2}}|\, \right|\]
D) \[|{{z}_{1}}+{{z}_{2}}|\,\ge \left| \,|{{z}_{1}}|-|{{z}_{2}}|\, \right|\]
Correct Answer: D
Solution :
It is a fundamental concept.
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