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- write sin(3x)cos(6x) + cos(3x)sin(6x) as a single trig functionVerify that (sinx-cosx)2=1-sin(2x)Partner each expression with an equivalent expression to make an identity equation. Then classify the equations into two groups. Explain the similarities and differences as to why you grouped them the way that you did. sin(x), csc(x),1/sin(x), csc(x), (csc x)^-1, csc(x^-1), arcsin(x), arccsc(x) csc(x)=1/sin(x) (csc(x))^-1 =sin(x) arccsc(x)=