An engineer is designing a curve on a highway. The curve will be an arc of a circle with radius of 1260 ft. The central angle that intercepts the curve will measure pi/6 radians. To the nearest foot, what will be the length of the curve?

The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. the front two wheels are six feet apart. what is the number of feet in the path traced by the inside front wheel in one trip around the circle? express your answer in the form "k \pi", where k is an integer.

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b