Need here 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)