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Trigonometric Ratios And Identities

MHT CET 2026 18th April Evening Shift

MCQ+2 / -02026
Let $f_k(x) = \dfrac{1}{k}(\cos^k x + \sin^k x)$ where $k \in N$, then $f_6(x) - f_4(x) = \ldots$

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