if cos theta = 2x/1+x^2 then tan theta = ? Share with your friends Share 4 Lovina Kansal answered this Dear student Given: cosθ=2x1+x2=BaseHypotenuseBy Pythagoras Theorem,Prependicular=Hypotenuse2-Base2=1+x22-2x2=1+x4+2x2-4x2=1+x4-2x2=1-x22=1-x2Therefore, tanθ=1-x22x Regards 5 View Full Answer