MATH 117 Week 6 Concept Check

MATH 117 Week 6 Concept Check - and he said that they...

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The Pythagorean Theorem is a theorem that involves right triangles. It works with all right triangles. This theorem states that the sum of the squares of the 2 legs is equal to the square of the hypotenuse. The hypotenuse is the longest side of a right triangle. This can also be proved like this: Here is an example of the Pythagorean Theorem used in real life: My family and I went to a store 3 years ago which just opened brand new and was selling TVs and other entertainment systems. We wanted to buy a flat screen TV, at least 41 inches. When we saw one TV, I predicted it would be around 41 inches. Unfortunately, it did not say the diagonal length; it just gave the height and width. Usually you don’t see that, it is always listed the diagonal is. We asked an employee,
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Unformatted text preview: and he said that they forgot to post the diagonal length and price on all the TVs. I decided to use the Pythagorean Theorem to find out the diagonal of it. The TV had a length of 40 and width of 9. I automatically knew that the diagonal had to be 41 because of the right triangle family 9, 40, and 41. Although, I still worked it out and got: + = a2 b2 c2 + = 92 402 c2 + = 81 1600 c2 = 1681 c2 = c 1681 = c 41 When I figured it out, I was satisfied, and decided to buy it. It came out to be at a very reasonable price, and we took it home. Ever since that day, we always thought how important the Pythagorean Theorem can be even in real life....
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This note was uploaded on 04/20/2011 for the course MATH 116 taught by Professor Mcmillian during the Spring '09 term at University of Phoenix.

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