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highschoolmom2010

  • 2 years ago

3. a. What is m<Y to the nearest degree? b. Reasoning Suppose you know the lengths of all three sides of a right triangle. Does it matter which trigonometric ratio you use to find the measure of any of the three angles? Explain.

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  1. highschoolmom2010
    • 2 years ago
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  2. saifoo.khan
    • 2 years ago
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    Use trig ratios to solve a.

  3. highschoolmom2010
    • 2 years ago
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    \[\tan^{-1}(y)=\frac{ 100 }{ 41 }\]

  4. saifoo.khan
    • 2 years ago
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    It seems right to me.

  5. highschoolmom2010
    • 2 years ago
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    now how do i do that ^^ i get NaN when i put it into calculators

  6. saifoo.khan
    • 2 years ago
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    Which calc do you have?

  7. saifoo.khan
    • 2 years ago
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    You made a mistake.

  8. highschoolmom2010
    • 2 years ago
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    http://www.rapidtables.com/calc/math/Tan_Calculator.htm thats the calc i used

  9. saifoo.khan
    • 2 years ago
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    |dw:1375998733252:dw|

  10. highschoolmom2010
    • 2 years ago
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    so do i use tan 100/41 or tan ^-1(100/41)

  11. highschoolmom2010
    • 2 years ago
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    using both i got NaN

  12. highschoolmom2010
    • 2 years ago
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    im still new to this so im horrible at it

  13. saifoo.khan
    • 2 years ago
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    Use this.

  14. saifoo.khan
    • 2 years ago
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    http://www.mathsisfun.com/scientific-calculator.html

  15. saifoo.khan
    • 2 years ago
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    Write 100/41 in the first box then click 'atan'.

  16. highschoolmom2010
    • 2 years ago
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    1.18169909573962

  17. highschoolmom2010
    • 2 years ago
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    but how can <y=1.2

  18. phi
    • 2 years ago
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    you are in radian mode

  19. highschoolmom2010
    • 2 years ago
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    -_- i gotta remember to click degrees

  20. phi
    • 2 years ago
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    that is too far off... atan(100/41)= ? deg

  21. highschoolmom2010
    • 2 years ago
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    omg one sec laptop being stupid

  22. phi
    • 2 years ago
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    I blame it on the loose nut behind the space bar

  23. highschoolmom2010
    • 2 years ago
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    \[\approx68\]

  24. highschoolmom2010
    • 2 years ago
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    @phi very funny you are

  25. phi
    • 2 years ago
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    67.706... deg

  26. highschoolmom2010
    • 2 years ago
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    @ phi it says to the nearest degree = rounding so \[\approx68\]

  27. phi
    • 2 years ago
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    ok

  28. highschoolmom2010
    • 2 years ago
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    so for part b i think that it does matter which function you use, but im not entirely sure why

  29. phi
    • 2 years ago
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    it should not matter, unless two of the legs are given with more precision than the 3rd side.

  30. highschoolmom2010
    • 2 years ago
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    what do you mean with more precision than the third

  31. phi
    • 2 years ago
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    if one side was sqrt(3), but they round it to 1.7, that would not be the best leg to use.... but I think you can use any of the trig functions if you know all 3 sides

  32. highschoolmom2010
    • 2 years ago
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    oh ok

  33. highschoolmom2010
    • 2 years ago
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    @saifoo.khan &@phi thanks for the help

  34. phi
    • 2 years ago
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    Part (b) is a strange question Does it matter which trigonometric ratio you use to find the measure of any of the three angles? one of the 3 angles is a 90 degree angle, and you would not use trig to find it.

  35. highschoolmom2010
    • 2 years ago
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    i saw that too but

  36. highschoolmom2010
    • 2 years ago
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    i wasnt sure on that part of it

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