# Angle of the body diagonals

Using the vector dot product calculate the angle of the body diagonals of the cube.

## Correct answer:

Tips for related online calculators

Our vector sum calculator can add two vectors given by their magnitudes and by included angle.

See also our right triangle calculator.

See also our trigonometric triangle calculator.

See also our right triangle calculator.

See also our trigonometric triangle calculator.

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

**geometry**- analytic geometry
- vector
- scalar product
**arithmetic**- absolute value
**solid geometry**- cube
- space diagonal
**planimetrics**- Pythagorean theorem
- right triangle
- triangle
**goniometry and trigonometry**- cosine
- arccosine

### Units of physical quantities:

### Grade of the word problem:

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