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**Proove trig identity help plz**

I think this problem involves the double angle formula which i am not quite familiar with.

1+cos2(x)=cot(x)sin2(x)

I know the cot=1/tan(x) or cos(x)/sin(x)

sin2(x)=2sin(x)cos(x)

cos2(x)=1-2sin^2 (x)

But Im not sure what to do can u please help me?