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anonymous

  • 5 years ago

the legs of a right triangle are 3 and 4. find the length of the hypotenuse.

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  1. anonymous
    • 5 years ago
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    write down the general formula which is :\[c^2 = x^2 + y^2\]

  2. xkehaulanix
    • 5 years ago
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    For this, you would use the pythagorean theorem:\[ a ^{2}+b ^{2}=c ^{2}\] Since the legs are 3 and 4, replace a and b with them. \[3^{2}+4^{2}=c ^{2}\] 9+16=c^2 25=c^2 Take the square root to get c=5

  3. anonymous
    • 5 years ago
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    so c is : \[c =\sqrt{3^2 + 4^2} =\sqrt{25} = 5\]

  4. anonymous
    • 5 years ago
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    ^_^

  5. xkehaulanix
    • 5 years ago
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    Oh, sstarica has symbols. Use that one, it's prettier.

  6. anonymous
    • 5 years ago
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    lol :)

  7. anonymous
    • 5 years ago
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    thanks that was very helpfull :)

  8. anonymous
    • 5 years ago
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    a pleasure ^_^

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