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JEE MATHEMATICS MCQ: PROPERTIES OF TRIANGLES

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If in a Δ  ABC,cos⁡A+2cos⁡B+cos⁡C=2\Delta \;ABC,\cos A + 2\cos B + \cos C = 2, then a,  b,  ca,\;b,\;c are in
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Correct option: A
AP
Option A (AP) is correct because the given condition leads to the relationship sin⁡A+sin⁡C=2sin⁡B\sin A + \sin C = 2\sin B, which implies that a, b, and c are in arithmetic progression.

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