And because we are dealing with the unit circle here, we can say that for this special case, Remember:

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Presentation transcript:

And because we are dealing with the unit circle here, we can say that for this special case, Remember:

of the way around, then the length of this arc is Since 30° is So for any radius r when the central angle is 30° the length of the arc is… arc length arc length =

Remember: of the way around, then the length of this arc is Since 45 is So for any radius r when the central angle is 45 arc length arc length =

Remember: of the way around, then the length of this arc is Since 60 is So for any radius r when the central angle is 60 arc length arc length =

Converting degrees to radians Multiply by Converting radians to degrees Multiply by