29% of a university's freshman class are majoring in Economics. If 870 students in the freshman class are Economics majors, how
1 answer:
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Find one factor
Find one factor
Let 
be the length of the hypotenuse in the right triangle 
, with 
for 
, the angle opposite the hypotenuse.
By the law of cosines,
But
, so we end up with 
.
By the law of cosines,
But
