"Suppose that Novak Djokovic and Roger Federer are playing a tennis match in which the first player to win three sets wins the m
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Let's call trade balance b, exports e and imports i.
We now construct formula.
Put in the data from last year.
U.S trade balance for that year is -690 billion dollars.
Here's a diagram showing how to combine angles LDA (in red) and angle ADE (in blue). Hopefully it becomes a bit clearer why these two angles add up to line segment LE. Erase the shared segment DA if it helps show LE better.
See attached image below.
