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anonymous

  • one year ago

exact measures

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  1. anonymous
    • one year ago
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  2. hartnn
    • one year ago
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    how did u get b as that?

  3. hartnn
    • one year ago
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    try to find sin A you won't find b there at all :P

  4. Ac3
    • one year ago
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    use tangent to find side b

  5. Ac3
    • one year ago
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    doesn't matter which angle you pick you'll get it right either way

  6. anonymous
    • one year ago
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    so there's my mistake,.. tan82=5/b

  7. Ac3
    • one year ago
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    just remember tangent= opp/adj

  8. hartnn
    • one year ago
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    yep, thats correct find b from there

  9. anonymous
    • one year ago
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    b=5tan(82)

  10. Ac3
    • one year ago
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    so b = 5/tan(82)

  11. Nnesha
    • one year ago
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    |dw:1443988627702:dw| remember \[\rm sin \rm \theta = \frac{ opposite }{ hypotenuse }~~~~ \cos \theta = \frac{ adjacent }{ hypotenuse } ~~\tan \theta = \frac{ opposite }{ adjacent }\] if you want to find hypotenuse then you should use sin A =opposite/hyp

  12. Ac3
    • one year ago
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    your not solving for b properly you have to multiply both sides by b then divide by tan(82) bot sides

  13. Nnesha
    • one year ago
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    |dw:1443988722622:dw| given is opposite side of angle A and we want to find b which ration equal to opposite over adjacent

  14. hartnn
    • one year ago
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    tan 82 = 5/b b*tan 82 = 5 b = 5/tan 82

  15. anonymous
    • one year ago
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    oh i see

  16. anonymous
    • one year ago
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    to find the length of c I believe you would set up cos90=5/c

  17. hartnn
    • one year ago
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    you mean cos 8 = 5/c ??

  18. Nnesha
    • one year ago
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    she is using right angle

  19. hartnn
    • one year ago
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    cos 90 = sin 0 = 0

  20. hartnn
    • one year ago
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    if its 5/c its cos 8 or sin 82

  21. Nnesha
    • one year ago
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    |dw:1443988964305:dw| to find length C u don't have to use angle C use A or B

  22. anonymous
    • one year ago
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    hartnn where did you get the 8 from? :)

  23. anonymous
    • one year ago
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    hartnn never mind the angle :D

  24. hartnn
    • one year ago
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    8 is the angle of B in degrees

  25. hartnn
    • one year ago
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    but lets use sin 82 because 82 is a given information

  26. anonymous
    • one year ago
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    ok :) makes sense so sin82=5/c

  27. hartnn
    • one year ago
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    good, find c

  28. anonymous
    • one year ago
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    5/sin82

  29. hartnn
    • one year ago
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    excellent! you didn't repeat the same mistake :)

  30. anonymous
    • one year ago
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    I have a good teacher :D

  31. hartnn
    • one year ago
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    *blushes* :P i have an amazing student :)

  32. anonymous
    • one year ago
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    :-)

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