Quote:
Originally Posted by epiekarc  I understand how z and y were drawn in, what i dont understand is how or why we can calculate the angle. I was thinking about this problem some more and thought that if we drew in a circle and used the intersection of z and y as the mid point then i should be able to calculate for the lowest z-axis point value of the circle. I just don't know how to figure that out. |
According to my previous post you'll get a rectangle in the X-plane where z' is parallel to the line of intersection between the plane X and the plane Y.
The angle d has the diagonal and the side y' as it's legs. Use the right triangle painted light grey to calculate the angle d:
