Report - 7.INVERSE TRIGONOMETIC FUNCTIONS · 18. 2 1 x 2 1 3sin 1 x sin 1 3x 4x3 for ≤ ≤ x 1 2 1 3cos−1 x = cos−1 4x3 −3x for ≤ ≤ x 3 1 3 1 for 1 3x 3x x 3 xtan 2 3 1 1 − ≤

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