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Vanshika Asked a Question
July 29, 2020 3:45 pmpts 30 pts
  • IIT JAM
  • Physics (PH)

Plz explain me 1,2,3 steps as marked....!!!

I don't understand the flowing steps ....which formulas are used? plz helo me out
  • 2 Answer(s)
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  • Ravi prakash yadav Best Answer
    in step 1,they have simply expanded using formula for sin(a)cos(b)=(sin(b+a)+sin(b-a))/2. In step 2 they have simply integrated,but step 2 is written incorrect. See the attachment
    • cropped4623989272281221531.jpg
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  • Deepak singh thankyou
    see attached ..
    • cropped-383151112.jpg
    • cropped1572748302.jpg
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    Deepak singh
    any doubt then ask
  • Chandra dhawan
    see attached file.... and try to understand, how to solve your prob
    • cropped-1199331722.jpg
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    Chandra dhawan
    e
  • Deepak singh
    in first , use this formula ,
    • cropped1413547898.jpg
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    Deepak singh
    in second , there is simple integration of sin function
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