Here's the question you clicked on:
Show that the line that joins one vertex of a parallelogram to the mid-point of an opposite side trisects the diagonal.
Sorry. What's "Trisects", "Diagonal" and "Mid-point" in this situation? Definitions are always different for different questions.
Trisects - divided equally in 3 parts. Diagonal - from one corner to the opposite. Mid point - midway. Fairly basic.
Do you need to use formulas? Because I think a diagram on graph/grid paper would work fine.
Formula? I'm not sure. All vectors laws are straight forward in my opinion.
hmm..I am lost here how can a line trisect another line?
Maybe its trisecting the parallelogram itself? Not sure. What course is this? Vectors?
Let me show you the solution. This is how they draw it. Page 1: https://dl.dropbox.com/u/63664351/Mathematics%20at%20A-level/20130105_151348.jpg Page 2: https://dl.dropbox.com/u/63664351/Mathematics%20at%20A-level/20130105_151457.jpg I don't understand why AM=FM=1
@IsraelYkb Oh there are 2 lines...
if you can see why those two triangles are similar then the rest is a matter of ratios
Let me show you the solution. This is how they draw it. Page 1: https://dl.dropbox.com/u/63664351/Mathematics%20at%20A-level/20130105_151348.jpg Page 2: https://dl.dropbox.com/u/63664351/Mathematics%20at%20A-level/20130105_151457.jpg I don't understand why AM=FM=1
Thanks guys now I get it.