Solve 2tan^2x + 1 = 0 Interval : [0, 2 pi]

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2tan^2x-tanx-1=0 0<x<2pi

2tan^2x-tanx-1=0 0<x<2pi •MATH - Steve, Thursday, July 18, 2013 at 11:48am (2tanx+1)(tanx-1)...

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