%plot 4
t = -2:0.01:5;
A = 5;  %Amplitud
omega = 4;  %vinkelfrekvens
v=30;           %vinkel
v = (pi/180)*v;  %omvandla deg -> rad
x=A*sin(omega*t + v);
vinkel=(180/pi)*omega*t;
plot(vinkel,x,'k');
ylim([-6 6]);
xlim([-180 360]);
grid on;