Math Problem Statement
Find x in the figure below, rounded to one decimal place. A triangle is given. The first side of the triangle is horizontal and is labeled x. The second side of the triangle is at an angle of 30° with the first side. The third side of the triangle is at an angle 60° with the first side. A vertical line segment labeled 110 connects a vertex of the triangle to the first side at a right angle. x = 220
Incorrect: Your answer is incorrect.
Solution
To solve for in the triangle, we need to consider the geometry of the problem described. Here's the step-by-step process:
Given:
- A triangle with one side labeled (horizontal).
- The second side makes a 30° angle with the first side.
- The third side makes a 60° angle with the first side.
- There is a vertical line segment labeled 110 that connects a vertex to the first side at a right angle.
Assumptions based on the description:
- The vertical segment labeled 110 is the height of the triangle (altitude) from the vertex opposite the base (horizontal side ) to the base itself.
- The triangle is split by this height, making two right triangles.
To find , we can use the properties of right triangles and trigonometry.
Strategy:
The height of 110 creates two right-angled triangles with angles of 30° and 60°.
In the triangle with a 30° angle:
- The height (110) is opposite the 30° angle.
- Use the tangent function, where:
From this, we can solve for the adjacent side (the distance from the point of the vertex to the line at a 30° angle).
For the triangle with a 60° angle:
- The height is also opposite the 60° angle.
- Use the tangent function:
By combining the results from these steps, we will be able to determine the value of .
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Math Problem Analysis
Mathematical Concepts
Trigonometry
Right Triangles
Tangents
Angles in Triangles
Formulas
tan(30°) = opposite / adjacent
tan(60°) = opposite / adjacent
Theorems
Properties of right triangles
Trigonometric functions
Suitable Grade Level
Grades 9-11