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Trigonometry

The Pythagorean Theorem Quiz

If you answered E. 5, then you're correct. If you didn't, you can try to go back now and solve for the correct answer. Otherwise, read on for a detailed explanation of how to arrive at the right answer.

First, you must remember the pythagorean theorem is a squared plus b squared is equal to c squared. Now you can plug in the numbers you've been given. That leaves you with  three squared plus four squared equals c squared. Three squared is nine, and four squared is 16. Add those together to get 25. You're not done because 25 is equal to c squared. Take the square root of both sides to find that c equals five.

updated 2011-06-22 01:41:59

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How to Find the Slope

If you need to find the slope of a line that exists between two points, you use the formula: m = y2 - y1/x2 - x1 where (x1,y1) and (x2,y2) are points on the same line.

Example: Points (2,2) and (6,7)
m = (7 - 2)/(6-2)
m = 5/4

updated 2010-07-17 08:43:01

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