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Unofficialllyy

  • one year ago

Please help I will fan and medal!

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  1. Unofficialllyy
    • one year ago
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    Find the measure of angle x. Round your answer to the nearest hundredth. (please type the numerical answer only)

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  2. Unofficialllyy
    • one year ago
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    @welshfella Could you help?

  3. Unofficialllyy
    • one year ago
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    I have this question and another just like it and then I am finished with my homework.

  4. welshfella
    • one year ago
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    sin x = opposite side / hypotenuse = 8 / 17

  5. welshfella
    • one year ago
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    SOH-CAH-TOA - have you heard of that memory aid?

  6. welshfella
    • one year ago
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    calculate 8/17 then use ur calculator to find the value of angle x enter sin-1 (value of x)

  7. welshfella
    • one year ago
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    firrst use ur calculator to find 8/17 also!

  8. Unofficialllyy
    • one year ago
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    So when I do 8/17 I get 0.47

  9. Unofficialllyy
    • one year ago
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    Is that right?

  10. welshfella
    • one year ago
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    more accurately its 0.4706

  11. Unofficialllyy
    • one year ago
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    Then how do I do sin-1 on a calculator?

  12. welshfella
    • one year ago
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    now thats the sine of x so to find x you use the sin-1 function on your calculator

  13. welshfella
    • one year ago
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    there should be a button for it - you probably have to press the shift key as well - it must be a scientific calculator

  14. Unofficialllyy
    • one year ago
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    0.4899?

  15. welshfella
    • one year ago
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    no - x should be an angle between 20 and 30 degrees

  16. welshfella
    • one year ago
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    have you got your calculator set to radians?

  17. Unofficialllyy
    • one year ago
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    I'm not sure

  18. welshfella
    • one year ago
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    because that would be the value of x in radians

  19. Unofficialllyy
    • one year ago
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    I have a scientific calculator, but I don't know how to put in sin-1

  20. welshfella
    • one year ago
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    is there a set up key on ur calc?

  21. Unofficialllyy
    • one year ago
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    this is the exact calculator i have

  22. welshfella
    • one year ago
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    well you must have put sin-1 in correctly or you wouldn't have got 0.4899 which is exactly right in radians.

  23. welshfella
    • one year ago
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    press SHIFT SIN-1 then 0.4706

  24. Unofficialllyy
    • one year ago
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    28.07?

  25. welshfella
    • one year ago
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    yes thats correct

  26. Unofficialllyy
    • one year ago
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    And that would round up to 29, correct?

  27. welshfella
    • one year ago
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    you need to press the mode button to change rad to deg right?

  28. Unofficialllyy
    • one year ago
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    Yes I figured out how to do that

  29. Unofficialllyy
    • one year ago
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    Find the measure of angle y. Round your answer to the nearest hundredth. (please type the numerical answer only)

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  30. Unofficialllyy
    • one year ago
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    This is my last one

  31. Unofficialllyy
    • one year ago
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    Would the first one stay 28.07 or would it go up to 29 for my final answer?

  32. welshfella
    • one year ago
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    no you need to round to the nearest 1 hundredth - that's 28.073 ---> 28. 07 the second place after the decimal pont is the hundreds so the answer is 28.07 degrees

  33. Unofficialllyy
    • one year ago
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    Okay :)

  34. welshfella
    • one year ago
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    apply SOH-CAH-TOA sin = opposite / hypotenuse cos = adjacent / hypotenuse tan = opposite / adjacent opposite angle y is 5 adjacent to angle y = 14 so which trig ratio , sin cos or tan do we use?

  35. Unofficialllyy
    • one year ago
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    Tangent

  36. welshfella
    • one year ago
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    right! so we have tan y = 5/14 now you can find y in a similar way as for x in last problem this time use tan-1 on ur calc

  37. Unofficialllyy
    • one year ago
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    19.651?

  38. welshfella
    • one year ago
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    5/14 = 0.35714 enter SHIFT Tan-1 0.35714

  39. welshfella
    • one year ago
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    yes

  40. Unofficialllyy
    • one year ago
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    Which would be 19.65

  41. welshfella
    • one year ago
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    these are quite easy after you've practiced a few

  42. welshfella
    • one year ago
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    yea

  43. Unofficialllyy
    • one year ago
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    Yeah I think I will get the hang of them. Thank you so much, you were such a big help!

  44. welshfella
    • one year ago
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    yw

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