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anonymous

  • one year ago

what is cos b in the triangle

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  1. anonymous
    • one year ago
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    the triangle is not complet

  2. anonymous
    • one year ago
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    well thats the question .....exactly

  3. anonymous
    • one year ago
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    the /theta

  4. anonymous
    • one year ago
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    i hate cos tan and sin ........ worst at it ever

  5. anonymous
    • one year ago
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    where is you angle degree?

  6. anonymous
    • one year ago
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    it is very simple

  7. anonymous
    • one year ago
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    there is none???? @amorfide

  8. amorfide
    • one year ago
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    sohcahtoa cos so we use ah a is the adjacent side length, h is the hypotenuse so lets draw our triangle |dw:1434628807787:dw|

  9. amorfide
    • one year ago
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    hypotenuse is opposite the right angle always

  10. amorfide
    • one year ago
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    the opposite side length is opposite the angle and adjacent is the one left over

  11. amorfide
    • one year ago
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    btw is the question asking cos b or cosB

  12. amorfide
    • one year ago
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    @HWBUSTER00

  13. amorfide
    • one year ago
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    if it is asking cosB then cosB=a/h lets label our triangle |dw:1434629018296:dw| cosB=adjacent/hypotenuse you can finish it

  14. MrNood
    • one year ago
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    @amorfide It must be cos B (and that is the usual way of labelling triangles) @HWBUSTER00 This is about geometry and is using 'general' notation. You do not need actual numbers (e.g. lengths or angles) to answer the question in 'letters' The cosB is the adjacent side divided by hypotenuse each of those sides is denoted by a letter a,b or c so the answer (as seen ) is a fraction made of letters (such as x/y) you do not need numbers to answer 'general' equations

  15. anonymous
    • one year ago
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    WHICH MEANS THAT THE CAPITAL A,B,C are the angles

  16. anonymous
    • one year ago
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    while the a,b,c are the sides

  17. anonymous
    • one year ago
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    a/c?

  18. MrNood
    • one year ago
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    it is 'adjacent divided by hypotenuse' but you have written hypotenuse divided by adjacent just try again - you have the correct sides - in the wrong order

  19. anonymous
    • one year ago
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    ohhh c/a ......that my fault

  20. MrNood
    • one year ago
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    OK good now can I ask you to stop a moment an ask WHY you hate these trig functions? They are simply divisions (or ratios) of the sides and there are only 3 to remember right now.

  21. anonymous
    • one year ago
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    they are to complicated ????? I dont know maybee it is because my ocd ???? i hate it when numbers are not there ..........it is so frustrating

  22. MrNood
    • one year ago
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    |dw:1434629727102:dw| in these triangles the angle is always the same If oyu divide the opposite by the adjacent you ALWAYS get the same

  23. anonymous
    • one year ago
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    2??

  24. MrNood
    • one year ago
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    In th above case this answer is the TAN of the angle but the SAME appies to the the ratio between other sides. If oyu have studied similar triangles you can see why th eratio is always the same

  25. anonymous
    • one year ago
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    ohh thank you so much!!!!!! you are such a great help.

  26. MrNood
    • one year ago
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    The actual number is not important - you can see if you keep the angle th esame, but increae the length of a side then the OTHER sides increase by the same scale factor. THEREFORE the ratio of the sides stays the same provided trh eangle is the same - and those ratios are sine, cosine, and tangent

  27. anonymous
    • one year ago
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    what is z

  28. MrNood
    • one year ago
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    I DO know how to do the second one - but it is more important that YOU do If you look at the angle Z (49 deg) then what is the 'name' of the side z (opposite, adjacent or hypotenuse) What is the 'name' of the side labelled 4?

  29. anonymous
    • one year ago
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    adjacent?????leg???

  30. MrNood
    • one year ago
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    OK - you need to look at the way th etriangles are labelled - once oyu see this then the functions are easier Look at angle Z Look at side z in relation to Angle Z where is side z (opposite, adjacent or hypotenuse) hint - the hypotenuse is ALWAYS the longest side and is ALWAYS opposite the right angle (90 deg)

  31. anonymous
    • one year ago
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    opposite

  32. MrNood
    • one year ago
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    ok good and now th eside labelled 4? is that opposite, adjacent or hypotenuse

  33. anonymous
    • one year ago
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    to what ?? z

  34. MrNood
    • one year ago
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    in relation to Angle Z where is side labelled 4 (opposite, adjacent or hypotenuse)

  35. anonymous
    • one year ago
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    adjacent

  36. MrNood
    • one year ago
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    OK so for angle Z we know Angle Z= 39 deg Opposite side = z Adjacent side = 4 Which of the functions (sin cos and tan) uses Opposite and adjacent?

  37. MrNood
    • one year ago
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    you must have seen these - there are 3 to remember and there are many ways on the web given to remember them sine = O/H cosine = A/H Tangent = O/A so which one uses Opposite side and Adjacent side?

  38. anonymous
    • one year ago
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    sorry i had to go outside .....lol

  39. anonymous
    • one year ago
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    9.75 or 3.2?

  40. MrNood
    • one year ago
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    I have no idea what those numbers are I you want ot understand these functions please answer the above: sine = O/H cosine = A/H Tangent = O/A so which one uses Opposite side and Adjacent side? THEN for angle Z we know Angle Z= 39 deg Opposite side = z Adjacent side = 4

  41. anonymous
    • one year ago
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    it is a multiple choice question .

  42. anonymous
    • one year ago
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    3.2 1 39 9.75

  43. MrNood
    • one year ago
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    I don't really care about the answer - I can do it in my head I want you to go away not 'hating' trig functions Do not worry about the numeric answer - concentrate on the method I am showing you. Please tell me if you are not interested in any of this....and only want the answer

  44. MrNood
    • one year ago
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    If you want to understand these functions please answer the below: sine = O/H cosine = A/H Tangent = O/A so which one uses Opposite side and Adjacent side? THEN for angle Z we know Angle Z= 39 deg Opposite side = z Adjacent side = 4

  45. anonymous
    • one year ago
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    so one side of the triangle always less than the other

  46. MrNood
    • one year ago
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    OK - I'm out of here - I have tried to show oyu the method but you do not seem to want ot follow it. sine = O/H cosine = A/H Tangent = O/A so which one uses Opposite side and Adjacent side?

  47. anonymous
    • one year ago
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    z ........but not angle z

  48. anonymous
    • one year ago
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    my intention was not for you to do my work . it was to help with the question but you decided to give me a whole math lesson for witch I already told you i dont understand. you are being pretty rude and i dont appreciate it. and for some reason you want to take control and i dont know why . it was question .

  49. MrNood
    • one year ago
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    This a maths forum - I am here to give maths 'help' call it a lesson if oyu want. I have asked oyu to do a few simple steps which would guide you to the answer and I have tried to expand the concept so that see what oyu are doing is not inherently difficult. I asked several times for you to answer THIS (below) because it is the next KEY steo to getting the answer you want, but oyu have answered something else, or answered without giving any thought to what I asked. You have left the forum in th emiddle of help without notice. So I feel it is YOU who is not being polite. IF you can refer back to what has been discussed and explained in the above posts then you can answer the following: sine = O/H cosine = A/H Tangent = O/A so which one uses Opposite side and Adjacent side?

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