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anonymous

  • one year ago

GIVE MEDAL AND BECOME FAN!!! In ∆ABC, BC = 4 centimeters, m B = m C, and m A = 20°. What is AC to two decimal places? 9.32 centimeters 10.01 centimeters 11.52 centimeters 12.09 centimeters

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  1. anonymous
    • one year ago
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    OMG love ur hair!!!

  2. misty1212
    • one year ago
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    |dw:1436969052620:dw|

  3. misty1212
    • one year ago
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    HI!! thanks !

  4. misty1212
    • one year ago
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    does that picture look right?

  5. anonymous
    • one year ago
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    yes but its confusing

  6. misty1212
    • one year ago
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    those two bottom angles are equal

  7. anonymous
    • one year ago
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    ok

  8. anonymous
    • one year ago
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    im fanning you :)

  9. misty1212
    • one year ago
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    no that is wrong, each are 80

  10. misty1212
    • one year ago
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    since \[80+80+20=180\]

  11. misty1212
    • one year ago
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    you good with that? now it is time for the law of sines

  12. anonymous
    • one year ago
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    yea i did and im ready >:)

  13. misty1212
    • one year ago
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    \[\frac{AC}{\sin(80)}=\frac{4}{\sin(20)}\]

  14. misty1212
    • one year ago
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    so \[AC=\frac{4\sin(80)}{\sin(20)}\]

  15. anonymous
    • one year ago
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    do i divide tht?

  16. misty1212
    • one year ago
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    use this http://www.wolframalpha.com/input/?i=4sin%2880%29%2Fsin%2820%29

  17. misty1212
    • one year ago
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    you need a calculator to do it anyway might as well use wolfram if you scroll down you will see the answer is about \(11.52\)

  18. anonymous
    • one year ago
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    thx girl :)

  19. misty1212
    • one year ago
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    \[\huge \color\magenta\heartsuit\]

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