Centre of a circle & complex numbers

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SUMMARY

The discussion centers on finding the center of a circle defined by the argument of the complex expression arg(𝑧/(𝑧−2)) = π/3. Participants explore algebraic methods to determine the center and suggest sketching the locus of 𝑧. Key insights include identifying points on the circle with minimal and maximal real or imaginary parts, as well as considering the geometric interpretation of the angle between 0 and 2. The symmetry of the problem is also highlighted as a valuable aspect of the solution.

PREREQUISITES
  • Understanding of complex numbers and their properties
  • Familiarity with the concept of argument in complex analysis
  • Knowledge of geometric interpretations of complex functions
  • Ability to manipulate algebraic expressions involving complex variables
NEXT STEPS
  • Learn how to derive the center of a circle from complex arguments
  • Study the geometric interpretation of complex functions in the Argand plane
  • Explore the properties of symmetry in complex number problems
  • Investigate methods for finding critical points on curves defined by complex functions
USEFUL FOR

Mathematicians, students studying complex analysis, and anyone interested in the geometric properties of complex functions.

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arg(\dfrac{z}{z-2}) = \dfrac{\pi}{3}

sketch the locus of z and find the centre of the circle

I've sketched the locus of z but I can't seem to find the centre of the circle. Is there a way to do it algebraically? I've attempted to use z = x + iy, but to no avail.
 
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Can you find some (at least 3) points on the circle? The points with minimal/maximal real or imaginary part would be ideal.

A geometric interpretation (for all points, what is the apparent angle between 0 and 2?) is nice, too.

And if you see the symmetry of the problem, it is even better.
 

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