# A man 7

A man wandering in the desert walks 3.8 miles in the direction of S 44° W. He then turns and walks 2.2 miles in the direction of N 55° W. At that time, how far is he from his starting point? (Round your answer to two decimal places.)

## Correct answer:

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

**geometry**- analytic geometry
- vector
**arithmetic**- square root
- addition
**planimetrics**- Pythagorean theorem
- triangle
**goniometry and trigonometry**- sine
- cosine

#### Units of physical quantities:

#### Grade of the word problem:

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