Friday, 13 June 2014

calculus - Numerical approximation by hand of arctan?

Is there any numerical method I can use by hand to solve an equation with arctan?



I have for instance:
2x180π+arctan(2x)=150
Or in radians:

2x+arctan(2x)=5π6



Update:



With "by hand" I mean without a computer, just with pen, paper and a simple calculator.

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