यदि 4 tan-1 x + cot‑1 x = π है, तो x किसके बराबर है?

  1. 1
  2. -1
  3. √3

Answer (Detailed Solution Below)

Option 4 :
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NDA 01/2025: English Subject Test
30 Qs. 120 Marks 30 Mins

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संकल्पना:

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गणना:

4 tan-1 x + cot‑1 x = π

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