Sine or Cosine Rule?

Geometry Level 4

In \(\Delta ABC\), \(AD\) is the altitude from \(A\). Given \(b\gt c\), \(\angle C=23^{\circ}\) and \(AD=\frac{abc}{b^{2}-c^{2}}\), find \(\angle B\). Enter your answer in degrees.

This problem is part of the set Trigonometry.

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