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rebecca1233

  • 3 years ago

In a 45°- 45°- 90° right triangle, the hypotenuse is 5 cm. How long are the legs?

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  1. rebecca1233
    • 3 years ago
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    @RadEn

  2. cgreenwade2000
    • 3 years ago
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    This is a pretty easy one, do you know the Pythagorean Theorem?

  3. BluFoot
    • 3 years ago
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    |dw:1358277190112:dw|

  4. BluFoot
    • 3 years ago
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    Since it's isoceles, the two legs have the same length. Now you can use pythagorus: x^2+x^2 = 5^2, solve for x :)

  5. RadEn
    • 3 years ago
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    |dw:1358277125983:dw|

  6. RadEn
    • 3 years ago
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    in other words, x * sqrt(2) = 5 solve for x

  7. BluFoot
    • 3 years ago
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    OK but coming up with that is much more difficult than simply using Pythagorus

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