I would think A is the best answer since cars can't run on anything else on its own and the average home has about 2-4 cars. Not to mention, airplanes, boats, and 18-wheelers for shipping things
Answer:
what? this is so confusing.
they wanted it so they worked for it
There is a subtle difference between Arctan and arctan
Arctan(x) is an inverse function such that the range is only the principla value
meanwhile, arctan(x) takes on infinitely many values
hope this helps
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