Math Question

4. A spring is attached at one end to support \( B \) and at the other end to collar \( A \), as represented in the figure. Collar A slides along the vertical bar between points \( C \) and \( D \). In the figure, the angle \( \theta \) is the angle created as the collar moves between points \( C \) and \( D \).

When \( \theta=28^{\circ} \), what is the distance from point \( A \) to point \( B \) to the nearest tenth of a foot. Enter a number into the box.



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