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Answer:
Based on the assumption that the angle of the triangle at the cave entrance is a right angle, the angle Devora turned before walking to the treasure chest is approximately 57 degrees.
Step-by-step explanation:
A sketch of the triangle formed is attached where E is the entrance of the cave, C is the treasure chest and T is the treasure itself.
Using the cosine trigonometric ratio, we have that
Finding the arccosine of 0.5393 gives
