Question 415213
The arch over the window is 36 inches. The radius of the circle that is formed is 12. What is the measure of the central angle?

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In trigonometry there is a formula for a circle:
s=rx, r=radius,s=arc length, and x=central angle in radians.
For the given problem,the arc length is 36 and the radius is 12.

36=12x
x=36/12=3 radians
ans:
The central angle=3 radians