How to plot y = cos(pi/4)

How do you plot y = cos(pi/4)? Thank you

[Roger Stafford]

That is a constant value, namely 1/sqrt(2). It will not give you something to plot.

[James Crowe]

I need the straight line of it where y = constant. So it should be a straight line at 0.707

Answer 1

[Roger Stafford]

Choose upper and lower limits of x as a and b. Choose the desired number of plot points as n.

x = linspace(a,b,n);
y = repmat(cos(pi/4),1,n);
plot(x,y,’y-‘)

[James Crowe]

Thank you so much!