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zhane2015

  • 3 years ago

Heyy PARTY PEOPLE!! Help me, and u can get a fan or a medal!! 9. Find the value of x. Round to the nearest tenth. The diagram is not drawn to scale. triangle with sides X, 11 and a 24 degree angle (2 points)

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  1. zhane2015
    • 3 years ago
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    |dw:1361201598838:dw|

  2. amistre64
    • 3 years ago
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    what do you know about trig functions?

  3. zhane2015
    • 3 years ago
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    I need a walkthough

  4. zhane2015
    • 3 years ago
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    sine cosine and tangent

  5. amistre64
    • 3 years ago
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    |dw:1361201660763:dw|

  6. amistre64
    • 3 years ago
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    which trig function uses the next.to (adjacent) and hypotenuse

  7. amistre64
    • 3 years ago
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    tangent never looks at the hypotenuse; tan = over/nextto whats you next best one?

  8. amistre64
    • 3 years ago
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    might help to write out the functions :) just as a review

  9. zhane2015
    • 3 years ago
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    Cosine

  10. amistre64
    • 3 years ago
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    cosine is the winner !! now, cosine = next.to/ hypotenuse

  11. amistre64
    • 3 years ago
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    with what is given that leaves us: cos(24) = 11/x can you solve for x?

  12. zhane2015
    • 3 years ago
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    manually?? or can i use a calculator?

  13. amistre64
    • 3 years ago
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    youll need a calculator or table to determine cos(24) but just the setup would be useful. How would we move this equation around to solve for x?

  14. zhane2015
    • 3 years ago
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    I have NO CLUE, but the calculator is telling me 12.04

  15. amistre64
    • 3 years ago
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    cos(24) = 11/x x = 11/cos(24) and yes, abt 12.04 is what i get as well http://www.wolframalpha.com/input/?i=11%2Fcos%2824%29

  16. zhane2015
    • 3 years ago
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    Oh ok thanks I understand now, and I have another question if you don't mind

  17. amistre64
    • 3 years ago
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    if its a quick one, I have real job stuff that i have to attend to :)

  18. zhane2015
    • 3 years ago
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    kk hold on

  19. zhane2015
    • 3 years ago
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    What is the value of w to the nearest degree? Diagram (1 point) 25° 35° 40° 45° |dw:1361202248583:dw|

  20. amistre64
    • 3 years ago
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    the idea is to find v in order to find w, right?

  21. zhane2015
    • 3 years ago
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    If this isn't quick you don't have to help, I don't want to waste your time

  22. zhane2015
    • 3 years ago
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    but yes

  23. amistre64
    • 3 years ago
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    itll be quick enough, go ahead and write out the sin cos tan function for me so we can reference them

  24. zhane2015
    • 3 years ago
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    sin = Opposite/Hyp. cos = adjacent/ Hyp. tan= opposite/adjacent

  25. amistre64
    • 3 years ago
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    lets name the parts to compare as well |dw:1361202408276:dw|

  26. amistre64
    • 3 years ago
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    in my mind, over is the same as opposite :)

  27. zhane2015
    • 3 years ago
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    oh ok,

  28. amistre64
    • 3 years ago
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    so, would you agree that the sine function works best for us on this one?

  29. zhane2015
    • 3 years ago
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    Yes

  30. amistre64
    • 3 years ago
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    sin(65) = v/15 ; v = 15 sin(65) sin(w) = v/21, replacing the value of v we get sin(w) = 15 sin(65)/21 this make sense so far?

  31. zhane2015
    • 3 years ago
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    yes, I think i got it from here, Thanks

  32. amistre64
    • 3 years ago
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    good :) keep in mind that to find w we need to do an inverse sin operation

  33. zhane2015
    • 3 years ago
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    I gotcha ;)

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