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Question

The locus of the complex number z such that arg(z2z+2)=π3 is:

A
A circle
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B
A straight line
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C
A parabola
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D
An ellipse
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Solution

The correct option is A A circle

arg z2z+2 = π3

arg (z-2) - arg(z+2) = π3

now z can be a segment of circle because in a segment of circle angle remains constant .


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