SOLUTION: A triangle has side lengths of 8 cm, 11 cm, and square root of 193 cm classify the angle. A. Obtuse B. Acute C. Right D. None of these

Question 478257: A triangle has side lengths of 8 cm, 11 cm, and square root of 193 cm classify the angle.
A. Obtuse
B. Acute
C. Right
D. None of these
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
, , and

....since left side is not equal to right side, the triangle is NOT right triangle

an acute triangle satisfies , , and .
since or is NOT greater than , your triangle is NOT acute

For an angle to be obtuse,with C the angle opposite side C, cosC<0. Therefore, an obtuse triangle satisfies one of , , or
in your case or ; so, your triangle IS obtuse.

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