# Depth angles

At the top of the mountain stands a castle with a tower 30 meters high. We see the crossroad at a depth angle of 32°50' and the heel at 30°10' from the top of the tower. How high is the top of the mountain above the crossroad?

### Correct answer:

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

**algebra**- expression of a variable from the formula
**planimetrics**- right triangle
- triangle
**basic functions**- reason
**goniometry and trigonometry**- tangent
- cotangent

#### Units of physical quantities:

#### Grade of the word problem:

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