120757 On a rectangular hyperbola \(\mathrm{x}^2-\mathrm{y}^2=\mathrm{a}^2, \mathrm{a}>0\), three points \(A, B, C\) are taken as follows: \(A=\) \((-a, 0) ; B\) and \(C\) are placed symmetrically with respect to the \(x\)-axis on the branch of the hyperbola not containing A. Suppose that the triangle \(A B C\) is equilateral. If the side-length of the triangle \(A B C\) is \(k\), then \(k\) lies in the interval
120757 On a rectangular hyperbola \(\mathrm{x}^2-\mathrm{y}^2=\mathrm{a}^2, \mathrm{a}>0\), three points \(A, B, C\) are taken as follows: \(A=\) \((-a, 0) ; B\) and \(C\) are placed symmetrically with respect to the \(x\)-axis on the branch of the hyperbola not containing A. Suppose that the triangle \(A B C\) is equilateral. If the side-length of the triangle \(A B C\) is \(k\), then \(k\) lies in the interval
120757 On a rectangular hyperbola \(\mathrm{x}^2-\mathrm{y}^2=\mathrm{a}^2, \mathrm{a}>0\), three points \(A, B, C\) are taken as follows: \(A=\) \((-a, 0) ; B\) and \(C\) are placed symmetrically with respect to the \(x\)-axis on the branch of the hyperbola not containing A. Suppose that the triangle \(A B C\) is equilateral. If the side-length of the triangle \(A B C\) is \(k\), then \(k\) lies in the interval
120757 On a rectangular hyperbola \(\mathrm{x}^2-\mathrm{y}^2=\mathrm{a}^2, \mathrm{a}>0\), three points \(A, B, C\) are taken as follows: \(A=\) \((-a, 0) ; B\) and \(C\) are placed symmetrically with respect to the \(x\)-axis on the branch of the hyperbola not containing A. Suppose that the triangle \(A B C\) is equilateral. If the side-length of the triangle \(A B C\) is \(k\), then \(k\) lies in the interval