If \cot ⁡y = \frac{12}{5}, then what is the value of cos 2 y?

SSC CHSL 9 mar 2023 Shift 1 Paper

Section: Quantitative Aptitude

Question : 70 of 100

Marks: +1, -0

\cot ⁡y = \;{12}/{5}

, then what is the value of cos² y?

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