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carlodelmundo
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Homework Statement
http://carlodm.com/images/mth.png
** Note: The above is from a PRACTICE question for my course.
Homework Equations
arctan x = (theta)
The Attempt at a Solution
So. (-3,6) is in Quadrant 2. To solve for this angle we use:
(pi) + arctan (-6/2) = (pi) + arctan (-2) = 2.034.
My question is:
How can I solve for arctan(-2) if I don't have a calculator? aka... how do I do it by hand?
Thanks
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