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rebeccaskell94

  • 3 years ago

In the figure below, the length of line segment CB is 58 units and the length of line segment BG is 120 units. What is the length of line segment GE? http://learn.flvs.net/webdav/assessment_images/educator_geometry_v14/pool_Geom_3641_0404_07/image0084e2ee688.gif Does anyone know a formula I would use to solve this

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  1. rebeccaskell94
    • 3 years ago
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    @ash2326

  2. 91
    • 3 years ago
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    use sin/cos

  3. 91
    • 3 years ago
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    to find BA , then subtract that from 120

  4. 91
    • 3 years ago
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    to find AG

  5. 91
    • 3 years ago
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    use trig again to find GE

  6. rebeccaskell94
    • 3 years ago
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    @ . @

  7. mukushla
    • 3 years ago
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    1......find AB using tan 45 in triangle ABC 2......find AG using AG=120-AB 3......find GE using tan 60 in triangle AGE o.O

  8. ash2326
    • 3 years ago
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    @rebeccaskell94 did you understand?

  9. rebeccaskell94
    • 3 years ago
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    Idunnow is mukushala and 91's ways good? how do you do sin/cos anyway D: urg I'm so confused. My brain is not a math brain :(

  10. ash2326
    • 3 years ago
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    I triangle CBA, what's tan 45? @rebeccaskell94

  11. rebeccaskell94
    • 3 years ago
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    Doesn't tan(45) = 1?

  12. ash2326
    • 3 years ago
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    yeah, you;re right but it's also perpendicular/ adjacent, isn't it?

  13. rebeccaskell94
    • 3 years ago
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    Idk what to do with it now D:

  14. Calcmathlete
    • 3 years ago
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    Remember how the legs of a 45-45-90 triangle are the same length? Can you find AG knowing that?

  15. phi
    • 3 years ago
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    Are you studying trig? these are 45-45-90 triangle and 30-60-90 triangle

  16. rebeccaskell94
    • 3 years ago
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    ummm can we have like, 1 person helping me xD too many is making it worse. It takes a while to help me bc my brain...it doesn't get along well with math

  17. 91
    • 3 years ago
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    ok, I am out

  18. ash2326
    • 3 years ago
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    I'll let others help here :P I'll observe silently :)

  19. rebeccaskell94
    • 3 years ago
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    But ashy!! D: I wanted you to help me xD

  20. Calcmathlete
    • 3 years ago
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    |dw:1343150968050:dw| If x = 58, can you figure the rest out?

  21. Calcmathlete
    • 3 years ago
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    I just used the ratio for a 45-45-90 triangle and 30-60-90 triangle.

  22. ash2326
    • 3 years ago
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    @rebeccaskell94 @Calcmathlete is a great helper, I'm sure you'll understand .

  23. rebeccaskell94
    • 3 years ago
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    Okay I has this XD|dw:1343151162714:dw|

  24. Calcmathlete
    • 3 years ago
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    Oh. You misread that part for AG....it said 120 - x. When I said to figure out the rest, I meant did you understand how to get the answer now using the ratios, but it's good practice XD Good job by the way :)

  25. Calcmathlete
    • 3 years ago
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    If you didn't notice, all it asked for was GE which you have as 62√3 which you have :)

  26. rebeccaskell94
    • 3 years ago
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    Oh wait, so are my ∆s right?

  27. Calcmathlete
    • 3 years ago
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    Yup :) Good work! That one part on the bottom of the 30-60-90 triangle is wrong because you misread it, but as long as you understand the concept, it's fine :)

  28. rebeccaskell94
    • 3 years ago
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    Which one?

  29. Calcmathlete
    • 3 years ago
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    |dw:1343151807943:dw|

  30. rebeccaskell94
    • 3 years ago
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    ohhhh okay

  31. Calcmathlete
    • 3 years ago
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    Yeah. I think you read it as 20 - x when it's 120 - x.

  32. Calcmathlete
    • 3 years ago
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    Good job though. 45-45-90 and 30-60-90 triangles can be very simple once you remember the ratios! :D

  33. rebeccaskell94
    • 3 years ago
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    Thank you :D

  34. Calcmathlete
    • 3 years ago
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    np :)

  35. 91
    • 3 years ago
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    good job , "becca"

  36. rebeccaskell94
    • 3 years ago
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    lol why the quotation marks around my name D:

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