The valve cap on a bicycle wheel is 12.5 in. from the center of the wheel. From the position shown (0∘ in standard position), the wheel starts to roll. After the wheel has turned 765∘ how far above the ground is the valve cap? Assume that the outer radius of the tire is 13.375 in.

step-by-step explanation:

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,

by definition, an arc subtended by a central angle of some given measure has the same measure. so .