A. y2 = cx2 + x3
B. y2 = x2 + cx4
C. y2 = cx4 + x3
D. y2 = x + cx4
A= sin 780- sin 180+ cos 1320, B= cos 120+ cos 840+ cos 1320+ cos 1560 and C= (sin 750+sin 150)/ (sin 750+cos 150) then by arranging in the ascending order
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