Retrouver une forme trigonométrique ou exponentielle Exercice

z=2e^{-i\frac{\pi}{4}}

z=4e^{-i\frac{\pi}{4}}

z=2e^{i\frac{\pi}{4}}

z=4e^{i\frac{\pi}{4}}

z=2\left(\cos\left(\dfrac{7\pi}{6}\right)+isin\left(\dfrac{7\pi}{6}\right)\right)

z=2\left(\cos\left(\dfrac{5\pi}{6}\right)+isin\left(\dfrac{5\pi}{6}\right)\right)

z=2\left(\cos\left(-\dfrac{\pi}{6}\right)+isin\left(-\dfrac{\pi}{6}\right)\right)

z=2\left(\cos\left(\dfrac{\pi}{6}\right)+isin\left(\dfrac{\pi}{6}\right)\right)

z=5\left(\cos\left(\dfrac{3\pi}{4}\right)+isin\left(\dfrac{3\pi}{4}\right)\right)

z=5\left(\cos\left(\dfrac{\pi}{4}\right)+isin\left(\dfrac{\pi}{4}\right)\right)

z=5\left(\cos\left(-\dfrac{\pi}{4}\right)+isin\left(-\dfrac{\pi}{4}\right)\right)

z=5\left(\cos\left(\dfrac{5\pi}{4}\right)+isin\left(\dfrac{5\pi}{4}\right)\right)

z=4\left(\cos\left(\dfrac{4\pi}{3}\right)+isin\left(\dfrac{4\pi}{3}\right)\right)

z=4\left(\cos\left(\dfrac{5\pi}{3}\right)+isin\left(\dfrac{5\pi}{3}\right)\right)

z=4\left(\cos\left(\dfrac{\pi}{3}\right)+isin\left(\dfrac{\pi}{3}\right)\right)

z=4\left(\cos\left(-\dfrac{\pi}{3}\right)+isin\left(-\dfrac{\pi}{3}\right)\right)

z=6e^{\frac{7i\pi}{6}}

z=6e^{\frac{5i\pi}{6}}

z=6e^{\frac{i\pi}{6}}

z=6e^{-\frac{i\pi}{6}}

z=5e^{\frac{2i\pi}{3}}

z=5e^{\frac{4i\pi}{3}}

z=5e^{\frac{i\pi}{3}}

z=5e^{-\frac{i\pi}{3}}