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cutiecomittee123

  • one year ago

Precalc help!!

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  1. cutiecomittee123
    • one year ago
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    |dw:1441932558113:dw|

  2. cutiecomittee123
    • one year ago
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    find x

  3. anonymous
    • one year ago
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    You have 2 angles. You know that the sum of the angles of a triangle are =180 so what is the measure of the unknown angle Z

  4. cutiecomittee123
    • one year ago
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    z=38

  5. anonymous
    • one year ago
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    Have you started using sin/cos yet?

  6. cutiecomittee123
    • one year ago
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    yeah i have

  7. anonymous
    • one year ago
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    Okay So for this we're going to use 50degrees, x and 35

  8. cutiecomittee123
    • one year ago
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    wait 50 degrees? you mean 48?

  9. anonymous
    • one year ago
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    x is opposite 52 degrees and 35 is adjacent 52 degrees, got that much?

  10. anonymous
    • one year ago
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    52*

  11. cutiecomittee123
    • one year ago
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    oh okay yes

  12. anonymous
    • one year ago
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    So which trig function deals with opposite and adjacent?

  13. cutiecomittee123
    • one year ago
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    so tan(52)=x/35

  14. anonymous
    • one year ago
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    yes And to get x by itself what do you have to do?

  15. cutiecomittee123
    • one year ago
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    multiply each side by 35 and so 35tan(52)=x

  16. anonymous
    • one year ago
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    Yes.

  17. cutiecomittee123
    • one year ago
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    x=44.80

  18. anonymous
    • one year ago
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    Are you expected to have a numerical answer, and if so do you have access to a graphing calculator to solve that?

  19. cutiecomittee123
    • one year ago
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    it says round to the nearest two decimal places

  20. anonymous
    • one year ago
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    Yes, thats right

  21. cutiecomittee123
    • one year ago
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    and on my calculator i get 44.79795713 so i rounded it to 44.80 is that right?

  22. anonymous
    • one year ago
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    Yep.

  23. cutiecomittee123
    • one year ago
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    sweet thanks

  24. anonymous
    • one year ago
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    Not a problem, if you have any more, tag me.

  25. cutiecomittee123
    • one year ago
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    can you helo with another one?

  26. anonymous
    • one year ago
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    yeah

  27. cutiecomittee123
    • one year ago
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    i do @Audeezy

  28. cutiecomittee123
    • one year ago
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    |dw:1441933111757:dw|

  29. cutiecomittee123
    • one year ago
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    this time solve for z. cant i just add together the given angles sp 90+47 and then subtract that from 180?

  30. cutiecomittee123
    • one year ago
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    so then z=43 degrees

  31. anonymous
    • one year ago
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    Yes because you know the triangle is =180 and the 90deg angle is given aswell as 47

  32. anonymous
    • one year ago
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    Yes, 180-90-47=43 :)

  33. cutiecomittee123
    • one year ago
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    alright, so do you know what angle an angle of elevation is?

  34. cutiecomittee123
    • one year ago
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    |dw:1441933304998:dw|

  35. cutiecomittee123
    • one year ago
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    a or b

  36. anonymous
    • one year ago
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    are you given any values?

  37. cutiecomittee123
    • one year ago
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    Well the question is: A lamp casts a shadow of a man standing ten feet away from the lamp post the shadow is 7 feet long the angle of elevation from the tip of the shadow of the lamp is 50 degrees. To the nearest foot the lampost is how tall?

  38. anonymous
    • one year ago
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    Let me try to draw and tell me if I properly represented i t

  39. cutiecomittee123
    • one year ago
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    my problem is i dont know what an angle of elevation is

  40. anonymous
    • one year ago
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    |dw:1441933555550:dw|

  41. anonymous
    • one year ago
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    tan(50)=man/7 man=7tan(50) and man= how tall he is .

  42. anonymous
    • one year ago
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    Throw that in a calculator and see if it matches with an answer

  43. cutiecomittee123
    • one year ago
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    wait so it would be tan(50)=x/7 multiply both sides by 7 and then 7tan(50)=x right?

  44. anonymous
    • one year ago
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    Think so, I belive that makes him 8.3~ feet tall

  45. cutiecomittee123
    • one year ago
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    wow so x=8.34 feet that a tall man!

  46. anonymous
    • one year ago
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    Is it open answer?

  47. cutiecomittee123
    • one year ago
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    what?

  48. anonymous
    • one year ago
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    Are you doing problems out of a textbook?

  49. cutiecomittee123
    • one year ago
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    oh we are finding the height of the lamp post! much better lol. I am doing a test but it is open notes and I had things similar on my notes but i always like to check and make sure i am doing it right ya know?

  50. anonymous
    • one year ago
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    yeah

  51. anonymous
    • one year ago
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    Dont put down an answer yet, let me run through my math one more time

  52. anonymous
    • one year ago
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    @cutiecomittee123 still with me?

  53. anonymous
    • one year ago
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    |dw:1441934203450:dw|

  54. cutiecomittee123
    • one year ago
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    wow yeah, darn it i already answered this sucks, luckily i can redo it though

  55. anonymous
    • one year ago
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    Can you change your answer, ior retake it as a whole

  56. cutiecomittee123
    • one year ago
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    but that would make more sense because ou have to keep in mind the shadow of the man also adds into the horizontal length

  57. cutiecomittee123
    • one year ago
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    i have to retake the whle thing sadly

  58. anonymous
    • one year ago
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    ahh, sorry about that

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