Circles! Again and Again!!
![Picture](/uploads/3/8/0/4/38046799/5985605_orig.jpg)
Secant - a region bounded by a chord and the arc subtended by the chord. A region not containing the center
![Picture](/uploads/3/8/0/4/38046799/2252572.jpg?228)
Arc - a part of continuos curve, if the circumference of a circle is divided two unequal parts/any connected part of a circumference.
![Picture](/uploads/3/8/0/4/38046799/8950470.jpg?419)
Sector - part of the area of the circle
Arc: segment of a circuference
S= pi/360 x c ------> c= 2piR or c= Dpi
(arc length formula)
(arc length formula)
Sector
A= piR^
A= pi(d/2) --------> Sector = Pi/360 x A
= pid^/4
A= piR^
A= pi(d/2) --------> Sector = Pi/360 x A
= pid^/4
Sample problem below:
Are any sector
As= n/360 x piR2
Where N is the number of degrees in the central angle. R is the radius
As= n/360 x piR2
Where N is the number of degrees in the central angle. R is the radius