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10 cards from this deck
eiθ=cosθ+isinθe^{i\theta} = \cos\theta + i\sin\thetaeiθ=cosθ+isinθ
z=reiθz = re^{i\theta}z=reiθ
z1z2=r1r2ei(θ1+θ2)z_1z_2 = r_1r_2e^{i(\theta_1+\theta_2)}z1z2=r1r2ei(θ1+θ2)
r1r2ei(θ1−θ2)\frac{r_1}{r_2}e^{i(\theta_1-\theta_2)}r2r1ei(θ1−θ2)
12(eiθ+e−iθ)\frac{1}{2}(e^{i\theta} + e^{-i\theta})21(eiθ+e−iθ)
12i(eiθ−e−iθ)\frac{1}{2i}(e^{i\theta} - e^{-i\theta})2i1(eiθ−e−iθ)
arg(z1)+arg(z2)\arg(z_1) + \arg(z_2)arg(z1)+arg(z2)
∣z1∣×∣z2∣|z_1| \times |z_2|∣z1∣×∣z2∣
−1-1−1
cosθ−isinθ\cos\theta - i\sin\thetacosθ−isinθ
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