Solved
This can be solved using simultaneous equations. Please refer to the diagram for the labelling.
From the diagram we can see (by Pythagoras' Theorem):
...[1]
...[2]
...[3]
...[4]
Subtracting the first from the second,
...[5]
Then, subtracting [5] from [3],
So we have
I don't get why . If this is the Pythagorean theorem, how did you come to that equation? I mean, when I physically look at the diagram, those 2 sides, "a" and "b" are not in the same triangle... I don't know if I'm clearly explaining myself here...
What happens to the other 2 sides that aren't labelled?