1. Find two different parametric descriptions for he circle of radiu 4 centered at (-3, 2).
2. The radius of the circumscribed circle of the triangle ABC is 15 cm. Given that B is a 49-degree angle, find the length of side AC.
1. Find two different parametric descriptions for he circle of radiu 4 centered at (-3, 2).
2. The radius of the circumscribed circle of the triangle ABC is 15 cm. Given that B is a 49-degree angle, find the length of side AC.
1. A circle of radius 4 centered at (-3, 2) has the equation . However, you can use trigonometric functions to establish a circular path with center (h, k) and radius r:
or
.
The first represents a clockwise path, and the second represents a counterclockwise path.
Hello, pyrosilver!
2. The radius of the circumscribed circle of the is 15 cm.
Given that , find the length of sideCode:A * o * * /*\ * * / * \ * * / * \ * / 15* \ * / * \ * * / Po 98° \ * * / * \ * / 49° 15 * \ B o - - - - - - - - o C * * * * * * *
The center of the circle is .
Draw radii
Since inscribed angle , then central angle
Use the Law of Cosines on