Math Problem Statement

In triangle KLM, side KL = 5 cm, angle KLM = 30°. Find the lengths of sides MK (l) and ML (x).

Solution

The triangle in the image appears to be a right triangle with points KK, LL, and MM, where:

  • k=5cmk = 5 \text{cm} is the length of side KLKL.
  • KLM=30\angle KLM = 30^\circ.

We need to find the lengths of sides ll (which is MKMK) and xx (which is MLML).

Step 1: Find xx

Using the properties of a 30-60-90 triangle, where the hypotenuse is twice the length of the shorter leg:

  1. The hypotenuse here is KL=5cmKL = 5 \text{cm}.
  2. Therefore, the shorter leg MLML is given by: x=52=2.5cm.x = \frac{5}{2} = 2.5 \text{cm}.

Step 2: Find ll

In a 30-60-90 triangle, the length of the longer leg is 3\sqrt{3} times the shorter leg: l=2.5×34.33cm.l = 2.5 \times \sqrt{3} \approx 4.33 \text{cm}.

Thus, the sides are:

  • x=2.5cmx = 2.5 \text{cm}.
  • l4.33cml \approx 4.33 \text{cm}.

Would you like further details or have any questions?

Related Questions:

  1. How would the calculations change if KLM\angle KLM were 4545^\circ?
  2. What are the properties of a 30-60-90 triangle?
  3. Can you find the area of triangle KLMKLM?
  4. What is the relationship between the sides of a 45-45-90 triangle?
  5. How do trigonometric ratios apply to solving this problem?

Tip:

In a 30-60-90 triangle, the hypotenuse is always twice the length of the shorter leg, and the longer leg is 3\sqrt{3} times the shorter leg.

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Math Problem Analysis

Mathematical Concepts

Trigonometry
Geometry
Right Triangles

Formulas

In a 30-60-90 triangle: Hypotenuse = 2 × shorter leg, Longer leg = shorter leg × √3

Theorems

30-60-90 Triangle Theorem

Suitable Grade Level

Grades 8-10