By Euler's formula, reiθre^{i\theta}reiθ in rectangular form is:
rcosθ+irsinθr\cos\theta + ir\sin\thetarcosθ+irsinθ
r+iθr + i\thetar+iθ
er(cosθ+isinθ)e^r(\cos\theta + i\sin\theta)er(cosθ+isinθ)
r(cosθ−isinθ)r(\cos\theta - i\sin\theta)r(cosθ−isinθ)