Math Problem Statement

Solve the right-angled triangles with the given angles and sides.

Solution

The image shows two right-angled triangles with some given angles and side lengths.

Analyzing the Triangles:

  1. Left Triangle:

    • It is a right-angled triangle.
    • Given angles: 4545^\circ and 4545^\circ, indicating this is an isosceles right triangle.
    • Given side: One side (the leg opposite one of the 4545^\circ angles) is marked as 4 units.
  2. Right Triangle:

    • This is also a right-angled triangle.
    • Given angles: 3030^\circ, 6060^\circ, and the right angle 9090^\circ.
    • Given side: The side opposite the 3030^\circ angle is marked as 6 units.

Solving for the Unknown Sides:

Let's solve for the missing sides in both triangles:

  1. Left Triangle:

    • Since it is a 45-45-90 triangle, both legs are equal. So, if one leg is 4, the other leg is also 4.
    • In a 45-45-90 triangle, the hypotenuse is 2\sqrt{2} times the length of a leg. Hypotenuse=425.66\text{Hypotenuse} = 4 \cdot \sqrt{2} \approx 5.66
  2. Right Triangle:

    • In a 30-60-90 triangle, the ratio of the sides opposite the 3030^\circ, 6060^\circ, and 9090^\circ angles is 1:3:21 : \sqrt{3} : 2.
    • Given that the side opposite the 3030^\circ angle is 6, the hypotenuse (opposite the 9090^\circ angle) will be: Hypotenuse=2×6=12\text{Hypotenuse} = 2 \times 6 = 12
    • The side opposite the 6060^\circ angle will be: Side opposite 60=6310.39\text{Side opposite } 60^\circ = 6 \cdot \sqrt{3} \approx 10.39

Would you like to know more details or ask any questions?

Related Questions:

  1. How do you derive the side ratios for 30-60-90 and 45-45-90 triangles?
  2. What are the properties of isosceles right triangles?
  3. How can trigonometry be used to find unknown sides in right triangles?
  4. What are some real-life applications of special right triangles?
  5. How do you find the area of these triangles?

Tip:

When working with right triangles, remember that the Pythagorean theorem and trigonometric ratios can help solve for unknown sides or angles efficiently!

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Math Problem Analysis

Mathematical Concepts

Geometry
Trigonometry
Special Right Triangles

Formulas

In a 45-45-90 triangle, the hypotenuse is √2 times the length of a leg.
In a 30-60-90 triangle, the sides have a ratio of 1 : √3 : 2.

Theorems

Pythagorean Theorem
Properties of Special Right Triangles

Suitable Grade Level

Grades 8-10