[Hindi] Engineering curve : Parabola by rectangle / parallelogram method ( problem 2 )

Question : Inscribe a parabola in a parallelogram having sides
120mm and 80mm long with an angle 60 degree
sorry for bad audio unfortunately my mic catches to many noise therefore i used the audio file from my phone which is not good as compared to my mic audio quality.This is my second video on this topic
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Shooting:
For video I use lg g5 mobile phone
For audio I use blue snowball mw condensor mic
EDITING:
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for audio I use Audacity.
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