tan(x)+1=sqrt(3)+sqrt(3)cot(x)as well as

sin(2x)= 2 cos^(x)

4cos2(x) = 8sin(x)cos(X)

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  1. 1)sin(x)/cos(x)+1=sqrt(3)(1+cos(x)/sin(x))


    3)cos2(x)=cos(2x) or cos^2(x)?

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