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anonymous

  • one year ago

Find the value of x. Express your answer in simplest radical form.

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  1. anonymous
    • one year ago
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    |dw:1439557302862:dw|

  2. Nnesha
    • one year ago
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    apply Pythagorean theorem

  3. Nnesha
    • one year ago
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    a^2+b^2=c^2

  4. Nnesha
    • one year ago
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    c= longest side (hypotenuse)

  5. anonymous
    • one year ago
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    so 25=a^2 + b^2?

  6. Nnesha
    • one year ago
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    yes a= ?? b= ??

  7. Nnesha
    • one year ago
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    |dw:1439557496518:dw|

  8. anonymous
    • one year ago
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    so 5?

  9. UsukiDoll
    • one year ago
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    is there one x we need to find or 2?

  10. anonymous
    • one year ago
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    i think just x …cuz the sides are equal

  11. Nnesha
    • one year ago
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    c= 5 a=x and b= x 45-45-90 triangle has two equal sides

  12. UsukiDoll
    • one year ago
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    strange.. usually we have 2 sides and 1 unknown? or has it been too long since I've seen a problem like this?

  13. anonymous
    • one year ago
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    ya… i was thinking maybe of using sohcantoa somehow??

  14. UsukiDoll
    • one year ago
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    can you post a screenshot of this problem?

  15. anonymous
    • one year ago
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    i can’t on an iPad..i tried.. but i drew exactly what they gave me

  16. anonymous
    • one year ago
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    would it be 5* sin(45)?

  17. Nnesha
    • one year ago
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    what's the subject you working on ?

  18. anonymous
    • one year ago
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    geometry

  19. Nnesha
    • one year ago
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    have you learned sin cos

  20. anonymous
    • one year ago
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    ya kind of

  21. anonymous
    • one year ago
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    i did sin45=opposite/5 then 5* sin45…

  22. Nnesha
    • one year ago
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    |dw:1439558158478:dw| both sides are same i guess you have to use sin

  23. Nnesha
    • one year ago
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    yes then solve for x

  24. anonymous
    • one year ago
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    ya cuz 3.5^2 +3.5^2=24.5

  25. anonymous
    • one year ago
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    so then x=3.5 ?

  26. Nnesha
    • one year ago
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    yeah you can round it to 25

  27. Nnesha
    • one year ago
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    so \[(3.5)^2+(3.5)^2 =5^2\]

  28. anonymous
    • one year ago
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    thanks!

  29. Nnesha
    • one year ago
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    my pleasure!

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