how to plot a line with angle

how to draw a line of AB and BC, with angle ABC = 30 degree. i.e BC is at 2,2, where axis x and y from 0 to 10.the length is about 2 cm for each line.thank you

Answer 1

[Image Analyst]

Once you do that elementary trigonometry to find all the points, you can use line() to draw the 2 or 3 lines to form the angle or triangle.

line([x1, x2], [y1, y2]);

But with just a single point at (2,2), you need to define the location of the other 2 points first.

Then use xlim and ylim to set up the axes limits:

xlim([0, 10]);
ylim([0, 10]);

Answer 2

[m]

thank you. i'm confusing between plot() and line(). now i get the clear picture.