MATH 1022 : MATH 1022 Exam 1 Notes
Document Summary
To convert degrees to radians, we use the conversion equation 1 radians. To convert radians to degrees, we use the conversion equation. For a circle of radius r, and central angle of radians, the area, a, of a sector of a circle is given by. Arc length of a sector of a circle. For a circle of radius r, the length of the arc, s, intercepted by a central angle of radians is given by =s. The right triangle definition of the trigonometric functions.
are externally tangent to one another, as shown in the figure. Find the area of the sector of the circle of radius 
that is cut off by the line segments joining the center of that circle to the centers of the other two circles.
