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anonymous

  • one year ago

Challenge! Ready? the length of the hypotenuse of a 30 degrees-60 degrees-90 degrees triangle is 18. What is the perimeter?

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  1. anonymous
    • one year ago
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    There is no diagram.

  2. TylerD
    • one year ago
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    |dw:1438077107588:dw|

  3. TylerD
    • one year ago
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    first gotta solve for y and x

  4. TylerD
    • one year ago
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    so sin(theta)=opp/hyp which means hyp x sin(theta) = opp

  5. TylerD
    • one year ago
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    so to solve for Y, you could say 18sin(30) = Y

  6. TylerD
    • one year ago
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    to solve for X, you could say 18sin(60) = X

  7. TylerD
    • one year ago
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    then to find the perimeter, you add X + Y + 18

  8. anonymous
    • one year ago
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    Right.

  9. anonymous
    • one year ago
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    Need the answer.

  10. welshfella
    • one year ago
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    its worth remembering the ratios of the 3 sides in this particular triangle if the hypotenuse is 2 then the other sides sre |dw:1438079506282:dw|

  11. welshfella
    • one year ago
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    so to work out the smallest side 1 /2 = x / 18 solve for x

  12. welshfella
    • one year ago
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    and for the longest leg sqrt3 / 2 = x / 18

  13. anonymous
    • one year ago
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    Nice.

  14. welshfella
    • one year ago
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    so for the last one x = (sqrt3 * 18) / 2

  15. welshfella
    • one year ago
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    so can you work out the measure of the 2 legs?

  16. welshfella
    • one year ago
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    just grab a calculator and enter the numbers

  17. anonymous
    • one year ago
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    Eh. I don't have one shoot.

  18. anonymous
    • one year ago
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    hold up

  19. anonymous
    • one year ago
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    This a challenge question anyways, okay I have the answer.

  20. hwyl
    • one year ago
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    |dw:1438081730010:dw|

  21. hwyl
    • one year ago
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    |dw:1438082284372:dw|

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