Respuesta :

mdshahidmdshahidalam

Answer:

2=4x/2x

2=2x

x=2/2

x=1

gubitosemary

Answer:

Step-by-step explanation:

sin(a+b)=sin(a)cos(b)+cos(a)(sin(b)

sin(4x)=sin(2x+2x)

sin(2x+2x)=sin(2x)×cos(2x)+cos(2x)×sin(2x)

simplified to

2sin(2x)cos(2x)

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