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# Pythagorean theorem

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In the right triangle shown, AC=6 and BC=4. What is AB?
Guest Apr 18, 2017
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There are 2 possible triangles that fit the description:

The Pythagorean theorem says this:

(leg)2 + (other leg)2 = (hypotenuse)2

The hypotenuse is the side formed by the 90º angle.

So...if your triangle is the first one, that means:

(AB)2 + (4)2 = 62

(AB)2 + 16 = 36

(AB)2 = 36 - 16

(AB)2 = 20

(AB) = +$$\sqrt{20}$$

If you need more help please say so :)

hectictar  Apr 18, 2017

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