We are given a circle with a triangle inscribed in it. One angle of the triangle is given as $95^\circ$. The angles are labeled $a$, $b$, and $c$. Also, it is indicated that two sides of the triangle are equal in length, which means the triangle is isosceles. We need to find the measures of angles $a$, $b$, and $c$. Angle $a$ is given as $95^\circ$, which seems to be an error given the figure. We will assume the $95^{\circ}$ angle is angle $a$. The side opposite angle $a$ is the diameter of the circle, therefore $a$ is a right angle, and $a = 90^\circ$.
2025/5/13
1. Problem Description
We are given a circle with a triangle inscribed in it. One angle of the triangle is given as . The angles are labeled , , and . Also, it is indicated that two sides of the triangle are equal in length, which means the triangle is isosceles. We need to find the measures of angles , , and . Angle is given as , which seems to be an error given the figure. We will assume the angle is angle . The side opposite angle is the diameter of the circle, therefore is a right angle, and .
2. Solution Steps
Since the side opposite angle is the diameter of the circle, the angle is a right angle. Therefore, .
The sum of angles in a triangle is .
Since , we have
The two sides of the triangle are equal. This means that the angles opposite these sides are equal, so .
Therefore, we can substitute for :
Since , then .