# Horizontally 6296

The camera with a viewing angle of 120 ° was placed horizontally on the observatory at 30 m. What length d of the section at the tower's base can the camera not capture?

### 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
- The Law of Sines
**goniometry and trigonometry**- tangent

#### Units of physical quantities:

#### Grade of the word problem:

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