Is the limit of sin (2x) / x 2 when x tends to zero? How did Z get here

Is the limit of sin (2x) / x 2 when x tends to zero? How did Z get here

From the basic limit formula LIM (x - > 0) SiNx / x = 1
lim(x->0)sin2x/x
=2 lim(x->0)sin2x/2x
=2*1
=2