Practice problem
What is the imaginary part of z=a(cos(3π2)+isin(3π2))?z=a(\text{cos}(\frac{3\pi}{2})+i\text{sin}(\frac{3\pi}{2}))?z=a(cos(23π)+isin(23π))?
a cos(3π2)a\text{ cos}(\frac{3\pi}{2})a cos(23π)
sin(3π2)\text{sin}(\frac{3\pi}{2})sin(23π)
ia sin(3π2)ia\text{ sin}(\frac{3\pi}{2})ia sin(23π)
−a-a−a
Type a concept, like “slope” or “photosynthesis”.
