cos (tan-1(sin(cot-1(x))) = ?

06 Apr, 2025

প্রশ্ন cos (tan-1(sin(cot-1(x))) = ?

  • ক.
    1-x21+x2
  • খ.
    1+x21-x2
  • গ.
    1-x21-x2
  • ঘ.
    1+x21+x2

সঠিক উত্তর

1+x21+x2

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