Find the modulus and argument of the following complex numbers and hence express each of them in the polar form :
1 + i

Question

Find the modulus and argument of the following complex numbers and hence express each of them in the polar form : 1 + i

Philoid · Accepted Answer

Given complex number is Z=1+i

We know that the polar form of a complex number Z=x+iy is given by Z=|Z|(cosθ+isinθ)

Where,

|Z|=modulus of complex number=

θ =arg(z)=argument of complex number=

Now for the given problem,

⇒

Since x>0,y>0 complex number lies in 1^st quadrant and the value of θ will be as follows 0⁰≤θ≤90⁰.

⇒

⇒ .

⇒

∴ The Polar form of Z=1+i is .

Find the modulus and argument of the following complex numbers and hence express each of them in the polar form :1 + i