When is the sum of two negative mixed numbers an integer
1 answer:
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Uhh, answer choices?
In any case, since is inscribed in a semicircle, it is a right triangle (due to the inscribed angle theorem). Thus, by the Pythagorean theorem,
Now, the circumradius of a right triangle (the radius of the circle passing through all three of its vertices) is simply half its hypotenuse, so
First compute the coefficient like this:
Simplifying the fraction over 4! we get:
and the variables are
. So answer 
.
The correct answer is C then.
Simplifying the fraction over 4! we get:
and the variables are
The correct answer is C then.