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OpenStudy (anonymous):
Television sets. What does it mean to refer to a 20-in tv set or a 25-ini tv set? Such units refer to the diagonal of the screen. A 30-in tv set also has a width of 24 inch. What is its height?
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OpenStudy (nikolas):
This is a trigonometry problem you can solve using Pythagorean theorem. You know that the hypotenuse is 30 inches and one side is 24 inches, so you can use the formula \[a ^{2}+b ^{2}=c ^{2}\] to solve for the unknown side.
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