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JoãoVitorMC Group Title

Consider the isosceles triangle with AB = AC. Suppose the angle bisector of B intersects the side AC at D and that BC = BD + AD. Determine the angle A.

  • 2 years ago
  • 2 years ago

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  1. JoãoVitorMC Group Title
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    |dw:1350605708301:dw|

    • 2 years ago
  2. CliffSedge Group Title
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    Wanna use trig, or regular plane geometry?

    • 2 years ago
  3. JoãoVitorMC Group Title
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    the easiest way to solve this

    • 2 years ago
  4. CliffSedge Group Title
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    I was looking at this last night. I'm trying to find my notes on it.

    • 2 years ago
  5. JoãoVitorMC Group Title
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    ok, i'm trying to solve this, but this one is really hard...

    • 2 years ago
  6. CliffSedge Group Title
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    Yeah, I'm trying combinations of law of cosines and law of sines.

    • 2 years ago
  7. JoãoVitorMC Group Title
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    but nothing yet

    • 2 years ago
  8. estudier Group Title
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    |dw:1350693786588:dw|

    • 2 years ago
  9. estudier Group Title
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    I will have to make a better drawing.....Answer s/b 100, I think....

    • 2 years ago
  10. estudier Group Title
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    |dw:1350694614179:dw|

    • 2 years ago
  11. JoãoVitorMC Group Title
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    what is "s/b 100"?

    • 2 years ago
  12. estudier Group Title
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    should be

    • 2 years ago
  13. JoãoVitorMC Group Title
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    ohh ok i got it

    • 2 years ago
  14. JoãoVitorMC Group Title
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    thank you so much!

    • 2 years ago
  15. estudier Group Title
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    yw:-)

    • 2 years ago
  16. JoãoVitorMC Group Title
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    hey where you get this 180° -5(Betha) = 4(Betha) ?

    • 2 years ago
  17. estudier Group Title
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    ADB is 3 Beta

    • 2 years ago
  18. JoãoVitorMC Group Title
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    yes but i still don't see how to get 4 Beta...

    • 2 years ago
  19. estudier Group Title
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    look at triangle AED

    • 2 years ago
  20. estudier Group Title
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    For 180-5 Beta.

    • 2 years ago
  21. JoãoVitorMC Group Title
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    yes that i got

    • 2 years ago
  22. JoãoVitorMC Group Title
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    but them you set this equal to 4 beta, then i'm lost...

    • 2 years ago
  23. estudier Group Title
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    BD = BE so 4 Beta

    • 2 years ago
  24. JoãoVitorMC Group Title
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    ohhhh now i see

    • 2 years ago
  25. JoãoVitorMC Group Title
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    thank you soo much!

    • 2 years ago
  26. estudier Group Title
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    yw:-)

    • 2 years ago
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