Plotting cos functions in matlab

Can someone tell me how you would plot a cos function into matlab so that you can see a few periods of the graph? I am trying to graph

v(t)= 5.6576cos(377t+44.9945)

where the 44.9945 is the angle for the phase. I am also trying to get

v1(t)= 10cos(377t)

for a few periods

Answer 1

[the cyclist]

omega = 377;

t = (0:0.01:(6*pi))/omega;
v = 5.6576*cos(omega*t+44.9945);
v1 = 10*cos(omega*t);

figure
h = plot(t,v,t,v1);
legend(h,{'v','v1'})

[mandy]

thank you!

Answer 2

[mohammed]

t = 0:0.01:(2*pi);
x = cos(t);
y = sin(t);
plot(t,x,'k'); hold on;
plot(t,y,'r-.'); 
axis([0 2*pi -1.5 1.5])
legend('cos(t)','sin(t)','Location','NorthEast')

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