Question 37867: Two angels are complementary. If the measure of one angle is x degrees, represent the measure of the other angle as an expression in x.
Answer by fractalier(6550)   (Show Source):
You can put this solution on YOUR website! This can be tricky at first, but it is an important understanding...
If two things add to make 90, and you know one of them, how do you find the other?
Don't you subtract it from 90?
If I tell you one angle is 20, the other is 90 - 20 or 70, right?
If I tell you one angle is 68, the other is 90 - 68 or 22.
If I tell you one angle is x, the other must be 90 - x.
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