How to polarplot theta=3*pi/4 ?

theta=3*pi/4

[Thorsten]

This would be just a single point. Are you sure that this is what you want?

[Shivam Gupta]

This would be like a straight line passing through origin with angle with positive x axis 3*pi/4

Answer 1

[Star Strider]

theta = 3*pi/4;

figure(1)
plot(theta, 'pg')

EDIT — Using the polar plot:

theta = 3*pi/4;

figure(1)
polar(theta*[1 1], [0 1], '-pg')

Answer 2

[Thorsten]

 theta = 3/4*pi; 
 plot([0 cos(theta)], [0 sin(theta)])
 axis equal
 axis([-1 1 -1 1])

Answer 3

[Steven Lord]

r = [-5 5];
theta = repmat(3*pi/4, size(r));
polarplot(theta, r)

Adjust the values in r to suit your desired polar axes radius.