clear all
close all

r = 0.2;
omega = 30;  
fi0= pi()/6;

T = 2*pi()/omega;

t = 0:0.001:2*T;

s = r*sin(omega*t + fi0);
s1 = r*sin(omega*t);
s2 = 2*r*sin(omega*t + fi0);

plot(t,s,'g',t,s1,'r',t,s2,'b')
legend('sin1','sin2', 'sin3')

