Could someone explain to me how does it come off so?
P Parlament New member Joined May 16, 2019 Messages 1 May 16, 2019 #1 Could someone explain to me how does it come off so?
Dr.Peterson Elite Member Joined Nov 12, 2017 Messages 16,084 May 16, 2019 #2 They replaced cos^2(x) with 1 - sin^2(x), and distributed.