Solve each problem involving an angle of elevation or depression. See Examples 3 and 4.
Error in Measurement A degree may seem like a very small unit, but an error of one degree in measuring an angle may be very significant. For example, suppose a laser beam directed toward the visible center of the moon misses its assigned target by 30 sec. How far is it (in miles) from its assigned target? Take the distance from the surface of Earth to that of the moon to be 234,000 mi. (Source: A Sourcebook of Applications of School Mathematics by Donald Bushaw et al.)
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