Question

plot a 45 degree line using matlab that starts from coordinates (0,0)

Answer 1

Here is the answer...

CODE:

x1=0 %initial x coordinate
y1=0 %initial y coordinate
l=10 %specify how much does the line have
angle=45 %specify what angle we need
x2=x1+(l*cos(angle)); %specify end point of x2
%cos(45)=5.2532198881 in radians %x2=0+(10*cos(45))=0+10*0.52532198881=5.2532198881
%x2=5
y2=y1+(l*sin(angle)); %specify end point of y2
%y2=0+(10*cos(45))=0+10*0.52532198881=5.2532198881
%y2=5
plot([x1 x2],[y1 y2])

Another Way:

x1=0 %initial x coordinate
y1=0 %initial y coordinate
l=10 %specify how much does the line have
angle=45 %specify what angle we need
x2=x1+(5.2532198881); %specify end point of x2
%cos(45)=5.2532198881 in radians %x2=0+(10*cos(45))=0+10*0.52532198881=5.2532198881
%x2=5
y2=y1+(5.2532198881); %specify end point of y2
%y2=0+(10*cos(45))=0+10*0.52532198881=5.2532198881
%y2=5
plot([x1 x2],[y1 y2])

OUTPUT:

If you have any doubts please COMMENT...

If you understand the answer please give THUMBS UP....