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A central angle of a circle whose radius is 8 centimeters subtends an arc whose length is  2π9centimeters.

What is the radian measure of the central angle?

 Feb 19, 2020
 #1
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2pi/9  =  r (theta in rads)

 

2pi /9  = 8 (theta in rads)      divide both sides by  8

 

(1/8) * 2pi / 9   =   2pi / 72   = theta in rads  =  pi  / 36

 

 

cool cool cool

 Feb 19, 2020

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