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If $z$ is a non-zero complex number, then arg $(z) + a r g (z)$ equals

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Correct option is D

If z∈R and z<0 thenarg⁡(z)=arg⁡(z¯)=π⇒ arg⁡(z)+arg⁡(z¯)=2πSuppose z∈C,z≠0 and z is not a negative real number.Let t arg (z) = a, where −π<α<πIn this case arg⁡(z¯)=−α, so thatarg⁡(z)+arg⁡(z)=0

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If z is a non-zero complex number, then arg (z) + arg (z) equals

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If $z$ is a non-zero complex number, then arg $(z) + a r g (z)$ equals