Question 1062529
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sin(x)-2cos(x)=0. --->  sin(x) = 2cos(x)  --->  (divide both sides by cos(x))  --->  

tan(x) = 2  --->  x = arctan(2) OR  x = arctan(2) + {{{pi}}}.

To find arctan(2), use your calculator or your computer, or trigonometric tables, or the Internet.
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