11th Class
Mathematics
Sample Paper
Maths Olympiad Model Paper-5
question_answer
If \[{{z}_{1}}\] and \[{{z}_{2}}\] are two non-zero complex numbers such that \[|{{z}_{1}}+{{z}_{2}}|\,=\,|{{z}_{1}}|+|{{z}_{2}}|,\] then \[arg\,\,({{z}_{1}})-\,\arg \,\,({{z}_{2}})\] is equal to