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 the amounts specified below. How far is it (in miles) from its assigned target in each case? (Use 234,000 miles as the distance from the surface of the earth to the surface of the moon.)
a: 1 degree
b: 30” (that’s 0 degree 0’ 30”)
a: 1 degree
b: 30” (that’s 0 degree 0’ 30”)
1 answer:
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thus f[ g(x) ] = x indeed, or g[ f(x) ] =x, thus they're indeed inverse of each other
