Simplify sec2(θ)−tan2(θ)+sin2(θ)+cos2(θ)\sec^2(\theta) - \tan^2(\theta) + \sin^2(\theta) + \cos^2(\theta)sec2(θ)−tan2(θ)+sin2(θ)+cos2(θ).
111
000
sin2(θ)\sin^2(\theta)sin2(θ)
222