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OpenStudy (anonymous):
In equilateral triangle RST, R has coordinates (0, 0) and T has coordinates of (2a, 0). Find the coordinates of S in terms of a.
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OpenStudy (anonymous):
point S is in the middle so x=a and \[y =\sqrt{(2a) ^{2}-a ^{2}}=a \sqrt{3}\]
OpenStudy (anonymous):
any questions?
OpenStudy (anonymous):
no, I understand! what formula did you use though?
OpenStudy (anonymous):
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