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# Graph z = 3cos315 + 3isin315 in the complex plane, how do I explain where I would find this equation on a complex plane?

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Graph z = 3cos315° + 3isin315° in the complex plane, how do I explain where I would find this equation on a complex plane?

Mar 9, 2019

$$\cos(315^\circ) = \dfrac{\sqrt{2}}{2}\\ \sin(315^\circ) = -\dfrac{\sqrt{2}}{2}\\ z=\dfrac{3\sqrt{2}}{2} - i \dfrac{3\sqrt{2}}{2}\\ \text{now just apply the results of the last problem}$$