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(1) \(DA = 4\)
(2) \(\angle ABD = 30\) degrees
Answer: A
Source: Manhattan GMAT
In the figure, \(ABC\) is an equilateral triangle, and \(DAB\) is a right triangle. What is the area of the circumscribed circle?
(1) \(DA = 4\)
(2) \(\angle ABD = 30\) degrees
Answer: A
Source: Manhattan GMAT
(1) \(DA = 4\)
(2) \(\angle ABD = 30\) degrees
Answer: A
Source: Manhattan GMAT
