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Anonymous
ok so assuming you know the Pythagorean theorem, you can state that a^2 +b^2=c^2...in the pic we only know the hypotenuse and one leg. By the theorem, we can say that the leg we know squared + the unknown leg squared = the hypotenuse squared. After squaring the values, subtract the squared leg value from the squared hypotenuse value. That will give you x^2. Since you are looking for x, take the square root of that value and you have you x.
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