Geometryhard · Past Paper
In triangle ABC, if cot A, cot B, cot C are in AP, then a^2, b^2, c^2 are in:
AAP
BGP
CHP
DNone
✓ Correct Answer: A — AP
Using the properties of triangles and trigonometry, if cotangents of angles are in Arithmetic Progression, the squares of the sides are also in AP.
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