5.3: Radians - Areas of Sectors and Segments Flashcards
1
Q
What is the formula for finding the area A of a sector of a circle?
A
A = 1/2r^2 θ
2
Q
What does r represent?
A
the radius of the circle
3
Q
What does θ represent?
A
the angle, in radians, contained by the sector
4
Q
What is the area of a segment in a circle of radius r?
A
A = 1/2r^2 (θ-sinθ)
