Which of the following is equal to `(-1)^(1/3)`?

Which of the following is not equal to 1?

Which of the following is equal to root(3)(-1)?

Which of the following is equal to 1 kgm^(-1) s^(-1) ?

If tan theta + tan ( theta + (pi)/(3))+ tan ( theta + (2pi)/(3))=3 , then which of the following is equal to 1 ?

If tan theta + tan ( theta + (pi)/(3))+ tan ( theta + (2pi)/(3))=3 , then which of the following is equal to 1 ?

If c=(1)/(x)+(1)/(y) and xgtygt0 , then which of the following equal to (1)/(c) ?