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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