Proving Trigonometric identity: sin(2x) = 2sin(x)cos(x)

Proving Trigonometric identity : sin(2x)=2sin(x)cos(x)
Try moving the black sine wave graph. What do you see underneath?
– Apolinario "Sam" Ortega

Information: Proving Trigonometric identity: sin(2x) = 2sin(x)cos(x)