A triangle has sides with lengths of 39 miles, 80 miles, and 89 miles. Is it a right triangle?

Answer 1

Yes, it is a right triangle

For a triangle to be a right triangle, sum of the squares of two sides must be equal to the square of the third side. In the present case, #39^2=1521# #80^2=6400# and #89^2= 7921#

It is thus seen the #39^2 +80^2= 89^2#

Hence it is a right triangle

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Answer 2

Isaiah Anthony

Yes, the triangle with sides measuring 39 miles, 80 miles, and 89 miles is a right triangle.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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