# De Moivre's formula

There are two distinct complex numbers, such that z

Calculate the sum of these two numbers.

^{3}is equal to 1 and z is not equal to 1.Calculate the sum of these two numbers.

## Correct answer:

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See also our trigonometric triangle calculator.

Try conversion angle units angle degrees, minutes, seconds, radians, grads.

### You need to know the following knowledge to solve this word math problem:

**arithmetic**- square root
- addition
**planimetrics**- area of a shape
- triangle
**numbers**- complex numbers
**goniometry and trigonometry**- sine
- cosine

### Units of physical quantities:

### Grade of the word problem:

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