Pre-Cal Angle and Radian Measure

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Last updated 12:22 PM on 9/16/26
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8 Terms

1
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360 degrees

2π

2
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1 degree =

(π/180) radians

3
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1 radian =

(180/π) degrees

4
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Length of an Arc

S = R x Theta (theta is the radian measure of the central value)

5
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Area of a sector

A = (1/2)(r2)(theta) (theta is the radian measure of the central angle)

6
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Displacement formula

2π(revolutions)

7
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Angular Velocity

2π(revolutions)/t

8
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Linear Velocity

r x 2π(revolutions)/t