# Diagonals 5113

In the diamond KLMN, the lengths of the diagonals are 10 cm and 6 cm. Determine the angle size that the longer diagonal makes with the side of the diamond.

### Correct answer:

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

**planimetrics**- Pythagorean theorem
- right triangle
- triangle
- rhombus
- diagonal
**goniometry and trigonometry**- arctangent

#### Units of physical quantities:

#### Grade of the word problem:

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