15. (8 points) c=6.00, y = 42.1º, b = 8.65. Find angles α and β and the length of side a. 16. (6 points) Graph: r = 1 - 4 cos θ
17. (6 points) Raise the complex number to a power as indicated, and give your answer in standard a + bi form. Show your work
(2+2i√3)⁶