Question

represent the complex number Z= –2+i in polar form​

Answer 1

Answer:

The polar form of a complex number z=a+bi is z=r(cosθ+isinθ) , where r=|z|=√a2+b2 ,

a=rcosθ and b=rsinθ , and

θ=tan−1(ba) for a>0 and

θ=tan−1(ba)+π or

θ=tan−1(ba)+180° for a<0 .

Example: Express the complex number in polar form.

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