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MATHEMATICS · Single correct · CBSE · Mathematics · Trigonometric Functions · Trigonometric Functions

Problem

cos⁡2x−3cos⁡x+1=1(cot⁡2x−cot⁡x)sin⁡(x−π)\cos 2x-3\cos x+1=\frac{1}{(\cot 2x-\cot x)\sin(x-\pi)} holds if: (1) cos⁡x=0\cos x=0 (2) cos⁡x=1\cos x=1 (3) cos⁡x=52\cos x=\frac{5}{2} (4) For no value of xx

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