# A boy 5

A boy starts at A and walks 3km east to B. He then walks 4km north to C. Find the bearing of C from A.

## Correct answer:

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

**geometry**- analytic geometry
**planimetrics**- right triangle
- triangle
**goniometry and trigonometry**- tangent
- arctangent

### Units of physical quantities:

### Grade of the word problem:

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