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Trigonometric Ratio And Identites

JEE Main 2023 (Online) 29th January Evening Shift

MCQ+4 / -12023

The set of all values of \(\lambda\) for which the equation \({\cos ^2}2x - 2{\sin ^4}x - 2{\cos ^2}x = \lambda\) has a real solution \(x\), is :

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