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OpenStudy (anonymous):
Triangle ABC is an equilateral triangle. AD=10. What is the length of CD? Give your answer to the nearest whole number.
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OpenStudy (anonymous):
Is there an image?
OpenStudy (midhun.madhu1987):
|dw:1438922575850:dw| Is the figure correct?
OpenStudy (anonymous):
Yes. But C is on top, A on the left.....and B on the right.
OpenStudy (midhun.madhu1987):
Fine... that's not a big deal...
OpenStudy (anonymous):
Like this? |dw:1438923211695:dw|
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OpenStudy (anonymous):
Yes.
OpenStudy (anonymous):
Then use the 30-60-90 special right triangle.
OpenStudy (anonymous):
If x=10, then what is \[\LARGE x \sqrt{3}=?\]|dw:1438923375167:dw|
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