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anonymous

  • one year ago

The picture below shows a portion of a river dam: Which of the following can be used to calculate the height of the river dam? 115 divided by cos 50 degrees 115 cos 50° 115 tan 50° 115 divided by sin 50 degrees

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  1. anonymous
    • one year ago
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  2. anonymous
    • one year ago
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    @Hero @peachpi @dan815 @Nnesha @nincompoop @Albany_Goon @Awolflover1 @badmood @robtobey

  3. kropot72
    • one year ago
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    Do you know the definitions of the Trig functions for a Right Triangle?

  4. anonymous
    • one year ago
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    No :(

  5. kropot72
    • one year ago
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    You can find them here: http://www.regentsprep.org/regents/math/algtrig/att1/trigsix.htm

  6. anonymous
    • one year ago
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    NONO

  7. anonymous
    • one year ago
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    I just need help working out the question.

  8. mathstudent55
    • one year ago
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    |dw:1439169760946:dw|

  9. mathstudent55
    • one year ago
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    Look in the triangle I drew above. Now look at your problem Which pieces of info do you know and what are you looking for?

  10. anonymous
    • one year ago
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    The opposite is what I am looking for.

  11. mathstudent55
    • one year ago
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    |dw:1439169845899:dw|

  12. mathstudent55
    • one year ago
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    Correct.

  13. anonymous
    • one year ago
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    dayyyum girl u smart

  14. anonymous
    • one year ago
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    Okay so how do I find it?

  15. mathstudent55
    • one year ago
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    |dw:1439169912884:dw|

  16. mathstudent55
    • one year ago
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    You want the opposite. You have the angle and the adjacent. Which trig function, sine, cosine, or tangent, relate the angle measure to the opposite and the adjacent?

  17. anonymous
    • one year ago
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    Opposite is cosine

  18. anonymous
    • one year ago
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    Adjacent is Sine

  19. mathstudent55
    • one year ago
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    No. Look in my drawing above. First, the cosine does not have the opposite at all. In addition, you need one ratio that has both adjacent and opposite since we don't know anything about the hypotenuse.

  20. anonymous
    • one year ago
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    Oh im sorry it is tan because of opp/adj

  21. mathstudent55
    • one year ago
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    |dw:1439170136519:dw|

  22. mathstudent55
    • one year ago
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    Exaclty.

  23. mathstudent55
    • one year ago
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    |dw:1439170223910:dw|

  24. mathstudent55
    • one year ago
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    Now you can rewrite the left side as a fraction over 1 and solve it like a proportion by cross multiplying.

  25. mathstudent55
    • one year ago
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    |dw:1439170321855:dw|

  26. mathstudent55
    • one year ago
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    Do you understand it?

  27. anonymous
    • one year ago
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    Yes I think so. So that means it would be C?

  28. mathstudent55
    • one year ago
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    Correct.

  29. anonymous
    • one year ago
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    Thank you for helping me @mathstudent55

  30. mathstudent55
    • one year ago
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    You're welcome.

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