<PRE><B>Question 1005672</B>
Some figure  illustrates the path of a toy racecar that begins at (8,0) and travels d meters counter-clockwise on a circular path with an 8-meter radius. The racecar stops at the point (x,y).

Define a formula that relates the horizontal component, x, (measured in radius lengths as well as meters) in terms of the number of meters, d, the racecar has traveled along the track. 
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The angle A = arc/radius = d/8 (A in radians)
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x = r*cos(d/8) meters --- (measured in radius lengths)
x = 8cos(d/8) meters --- (measured in meters)

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