Which of the following is a square root of 3[cos(4pi/9)+i sin(4pi/9)]

Idon’t know actually i’m in 5th grade and don’t know

The answer would be b

I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.