Vidushi Saklani posted an Question
September 29, 2021 • 23:10 pm 30 points
  • IIT JAM
  • Physics (PH)

Im not able to understand the last part ..hoe have we got 4 in denominator

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    Anshum Sharma best-answer

    The average value of cos²x is 1/2 that is why there is 1/4 in the answer.

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