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JEE MATHEMATICS MCQ: PROPERTIES OF TRIANGLES

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In △ABC, cos⁡A+2cos⁡B+cos⁡C=2\triangle A B C, \,\cos A+2 \cos B+\cos C=2, then the sides of the triangle are in
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Correct option: A
AP
The correct answer is A (AP). Using trigonometric identities and the given equation, we can show that a+c=2ba+c=2b, which implies that the sides are in Arithmetic Progression.

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