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Prove that : tan-1 x + cot-1 x = π/2 |
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Answer» To prove, tan-1 x + cot-1 x = π/2 Let us take tan-1 x = y, then x = tan y = cot((π/2) - y) Hence, cot-1 x = ((π/2) - y) = ((π/2) - tan-1 x) or, tan-1 x + cot-1 x = π/2 |
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