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

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2
Q

What does r represent?

A

the radius of the circle

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3
Q

What does θ represent?

A

the angle, in radians, contained by the sector

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4
Q

What is the area of a segment in a circle of radius r?

A

A = 1/2r^2 (θ-sinθ)

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