यदि 𝒙+𝟏/𝒙 = 2cos𝜽 है, तब 𝒙𝟑+𝟏/𝒙𝟑 का मान क्या होगा ?
 

  • 1

    2 cos𝟑𝜽

  • 2

    2 sin3𝜽

  • 3

    sin3𝜽

  • 4

    cos𝟑𝜽

Answer:- 1

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