Which complex number has modulus 5 and argument π/6\pi/6π/6?
5cos(π/6)+5isin(π/6)5\cos(\pi/6) + 5i\sin(\pi/6)5cos(π/6)+5isin(π/6)
52+53i2\frac{5}{2} + \frac{5\sqrt{3}i}{2}25+253i
Both a and b
532+5i2\frac{5\sqrt{3}}{2} + \frac{5i}{2}253+25i