D Question 13 Find all the complex roots. Write the answer in the indicated form. The complex cube roots of 8 (rectangular form) O 2, -1 - 13i, 1 - V3i O 2, 1 + 3 -1 - 3 O 2, 1 + 3i, 1 - 3i O 2, -1 + 13i, -1 - 13iQuestion 14 Use DeMoivre's Theorem to find the indicated power of the complex number. Write the answer in rectangular form. (cos 30 + i sin 30) 18 0 - 1 0 1 Oi 0 -i Question 15D Question 15 Find the product of the complex numbers. Leave answer in polar form. z1 = 2/cos -+ isin z2 = 6 cos -+ isin- O 8 cos 7 + i sing 12 cos - 57 + i sin 57t 12 12 0 8/ COS 12 57 + i sin 12 O 12 cos 12 + i sin 12D Question 16 Convert the rectangular equation to a polar equation that expresses r in terms of 0. (x - 3) 2 + y ? = 9 Or = 6 cos 0 Or = 6 sin O Or= -6sin 0 +9 0 12 - 6 cos 0 vestion 17