Trigonometry! #9

Geometry Level 2

Hexagon \(ABCDEF\) is inscribed in the circle of radius \(R\) . \(AB=CD=EF=R\). Points \(I\), \(J\), \(K\) are the midpoints of segments \(\overline{BC}\), \(\overline{DE}\), \(\overline{FA}\) respectively. Then \(\Delta IJK\) is:

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