NEED HELP HERE PLEASE
6.05

1. Express the complex number in trigonometric form.
-2 (1 point)


2(cos 90° + i sin 90°)
2(cos 0° + i sin 0°)
2(cos 180° + i sin 180°)
2(cos 270° + i sin 270°)
2. Express the complex number in trigonometric form.
-2i (1 point)


2(cos 180° + i sin 180°)
2(cos 90° + i sin 90°)
2(cos 270° + i sin 270°)
2(cos 0° + i sin 0°)
3. Express the complex number in trigonometric form.
6 - 6i (2 points)



six square root two times the quantity cosine of seven pi divided by four plus i times sine of seven pi divided by four
six square root two times the quantity cosine of five pi divided by four plus i times sine of five pi divided by four
six times the quantity cosine of seven pi divided by four plus i times sine of seven pi divided by four
six times the quantity cosine of five pi divided by four plus i times sine of five pi divided by four
4. Write the complex number in the form a + bi.
3(cos 270° + i sin 270°) (2 points)



-3i
3i
3
-3
5. Find the product of z1 and z2, where z1 = 7(cos 40° + i sin 40°), and z2 = 6(cos 145° + i sin 145°). (2 points)

42(cos 40° + i sin 40°)
42(cos 185° + i sin 185°)
13(cos 185° + i sin 185°)
42(cos 5800° + i sin 5800°)
6. Find the cube roots of 27(cos 330° + i sin 330°). (2 points)