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Svetach [21]
3 years ago
7

In the right triangle shown, DF=EF=3. How long is DE

Mathematics
1 answer:
levacccp [35]3 years ago
7 0

Answer:

DE=3\sqrt{2}\ units

Step-by-step explanation:

see the attached figure to better understand the problem

In this problem we have an isosceles right triangle (because has two equal sides)

so

Applying the Pythagorean theorem

DE^2=DF^2+EF^2

substitute the given values

DE^2=3^2+3^2

DE^2=18\\DE=3\sqrt{2}\ units

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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Step-by-step explanation:

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