If z=3+2i, then which one is true?

Is the sentence true or false?

arg ((1+i)/ (1+$\sqrt{3}i$ )) = 1/3

Is the sentence true or false?

arg arg ((2+5i)⁷) = 7arg arg (2+5i)

The argument of the complex number 5 + 2i is 0.38 radian  

 Complete

The argument of a complex number is defined as the angle _______________in the direction of the complex number represented on the complex plane

Complete

In polar form, a complex number is represented by the equation r(cos θ + i sin θ), here, θ is the__________

The argument of the complex number 5 + 5√3i is π/3

Is the sentence true or false?

arg (z₁ z₂) = arg ( z₁) arg ( z₂)

If z=5+i, then which one is true?

 What is the formula for argument of a complex number z=c+di