MATH 1022 Chapter : Sec 6 2 2
Document Summary
Objective 1: determining the area of a sector of a circle. For a circle of radius r, and central angle of radians, the area, a, of a sector of a circle is given by. The formula for the area of a sector of a circle, 2 r is only valid if the angle is in radians. An angle given in degrees must first be converted to radians. Objective 2: computing the arc length of a sector of a circle. The arc length of a sector of a circle depends on the corresponding central angle that intercepts the arc and the length of the radius of the circle. r. A central angle of radians has an intercepted arc equal in length to the radius of the circle times . A central angle of 1 radian has an intercepted arc equal in length to the radius of the circle. Arc length of a sector of a circle.
