Which of the following are correct for any tw | vedclass

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(D) For any two complex numbers $z_1$ and $z_2$:$1$. The modulus of the product is the product of the moduli: $|z_1 z_2| = |z_1| |z_2|$. Thus,$(a)$ is

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Both $(a)$ and $(c)$

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(D) For any two complex numbers $z_1$ and $z_2$:$1$. The modulus of the product is the product of the moduli: $|z_1 z_2| = |z_1| |z_2|$. Thus,$(a)$ is correct.$2$. The argument of the product is the sum of the arguments: $arg(z_1 z_2) = arg(z_1) + arg(z_2)$. Thus,$(b)$ is incorrect.$3$. The triangle inequality for moduli states that $|z_1 - z_2| \geqslant ||z_1| - |z_2||$. Thus,$(c)$ is correct.Therefore,both $(a)$ and $(c)$ are correct.

Which of the following are correct for any two complex numbers $z_1$ and $z_2$?

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