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Prove that there does not exist a non-constant holomorphic function that takes real values on two lines that intersect at an irrational angle measured in degrees.
Note: A function is said to be holomorphic if it is differentiable at every point in the complex plane (note that we take the derivative with respect to the complex variable ).
Note: A function is said to be holomorphic if it is differentiable at every point in the complex plane (note that we take the derivative with respect to the complex variable ).