Sqrt2 tan(x) cos(x)-tan(x)=0

[From: ] [author: ] [Date: 13-01-30] [Hit: ]

√2 tan(x) cos(x)-tan(x)=0 => (0 ~ 2π)
tan(x)(√2cos(x)-1) = 0
tanx = 0 => x = 0, π
cosx = 1/√2 => x = π/4, 7π/4

keywords: tan,cos,Sqrt,Sqrt2 tan(x) cos(x)-tan(x)=0