JEE Main & Advanced
Sample Paper
JEE Main - Mock Test - 9
question_answer
If \[{{z}_{1}},{{z}_{2}}\] and \[{{z}_{3}}\] are three distinct points on circle \[|z|=1,\] then minimum value of \[\cos (\arg \,{{z}_{1}}-\arg {{z}_{2}})+\cos (\arg {{z}_{2}}-\arg {{z}_{3}})+\cos (\arg {{z}_{3}}-\arg {{z}_{1}})\]is ______.