Measuring angles using distance Refer to Exercise. If two points A and B are 500 miles apa...

Measuring angles using distance Refer to Exercise. If two points A and B are 500 miles apart, express angle ACB in radians and in degrees.

Measuring distances on Earth The distance between two points A and B on Earth is measured along a circle having

center C at the center of Earth and radius equal to the distance from C to the surface (see the figure). If the diameter of Earth is approximately 8000 miles, approximate the distance between A and B if angle ACB has the indicated measure:

(a) 60°

(b) 45°

(c) 30°

(d) 10°

(e) 1°

EXERCISE