# Ditch

The ditch profile is an isosceles trapezoid with bases of length 80m and 60m. The slope of the sidewall of the ditch is 80°. Calculate the ditch depth.

### Correct answer:

Tips for related online calculators

The line slope calculator is helpful for basic calculations in analytic geometry. The coordinates of two points in the plane calculate slope, normal and parametric line equation(s), slope, directional angle, direction vector, the length of the segment, intersections of the coordinate axes, etc.

Calculation of an isosceles triangle.

See also our right triangle calculator.

See also our trigonometric triangle calculator.

Calculation of an isosceles triangle.

See also our right triangle calculator.

See also our trigonometric triangle calculator.

#### 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
- trapezoid
**goniometry and trigonometry**- tangent

#### Units of physical quantities:

#### Grade of the word problem:

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