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When converting a rectangular equation into polar form, what are the conversion equations you can use? Select all that apply. Select one or more: O a. y = rsine Ob. tan-15 = 180 O c. r = V x2 + 12 O d. 12 = x2 - 12 De. x = rcos0 Of. tan0 = - O g. sino + cos0 = 1