Math Problem Statement

Find the value of each variable. (Problem 11 and Problem 12)

Solution

The image you provided shows two right triangles, and the task is to find the values of xx and yy for each triangle.

Triangle 1 (Problem 11):

This is a right triangle with one angle marked as 4545^\circ and the hypotenuse labeled as 10. The variables xx and yy represent the other two sides of the triangle.

Given that it's a right triangle with a 4545^\circ angle, it must be an isosceles right triangle (a 45-45-90 triangle). In such a triangle, the two legs are equal in length, and each leg is 12\frac{1}{\sqrt{2}} times the length of the hypotenuse.

To find the value of xx and yy, we use the following relation for a 45-45-90 triangle:

x=y=hypotenuse2=102=10×22=527.07x = y = \frac{\text{hypotenuse}}{\sqrt{2}} = \frac{10}{\sqrt{2}} = 10 \times \frac{\sqrt{2}}{2} = 5\sqrt{2} \approx 7.07

Thus: x=y=527.07x = y = 5\sqrt{2} \approx 7.07

Triangle 2 (Problem 12):

This is another right triangle with one angle marked as 3030^\circ and the hypotenuse labeled as xx. The opposite side to the 3030^\circ angle is labeled yy, and the adjacent side is labeled xx.

In a 30-60-90 triangle, the ratio of the sides is:

  • The side opposite the 3030^\circ angle is half the length of the hypotenuse.
  • The side opposite the 6060^\circ angle is 32\frac{\sqrt{3}}{2} times the hypotenuse.

Since the hypotenuse is given as xx, we can express yy and the other side (adjacent to the 3030^\circ angle) in terms of xx.

  1. The side opposite the 3030^\circ angle is: y=12xy = \frac{1}{2}x

  2. The side adjacent to the 3030^\circ angle (which is opposite the 6060^\circ angle) is: Adjacent side=32x\text{Adjacent side} = \frac{\sqrt{3}}{2}x

To fully solve for xx and yy, more information is needed (either the lengths of sides or angles) to establish the exact relationship. If the side opposite the 30° angle is known, we could solve for xx and yy.

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Math Problem Analysis

Mathematical Concepts

Trigonometry
Right Triangles
30-60-90 Triangle
45-45-90 Triangle

Formulas

For 45-45-90 triangle: x = y = hypotenuse / √2
For 30-60-90 triangle: y = (1/2) * x, Adjacent side = (√3 / 2) * x

Theorems

Pythagorean Theorem
Properties of Special Triangles

Suitable Grade Level

Grades 9-12