prove that sec2 theta - cos 2 theta =sin 2 theta (sec 2 theta - 1) Share with your friends Share 3 Lovina Kansal answered this Dear student sec2θ-cos2θ=secθ-cosθsecθ+cosθ=1cosθ-cosθ1cosθ+cosθ=1-cos2θcosθ1cosθ+cosθ=sin2θcosθ1cosθ+cosθ=sin2θ1cos2θ+1=sin2θsec2θ+1 Regards 33 View Full Answer M.c. Shaji answered this prove that sec2theta - cos2theta = sin2theta (sec2theta +1) 7
