Simplify sec2(θ)−1\sec^2(\theta) - 1sec2(θ)−1.
tan2(θ)\tan^2(\theta)tan2(θ)
sin2(θ)\sin^2(\theta)sin2(θ)
cos2(θ)\cos^2(\theta)cos2(θ)
csc2(θ)\csc^2(\theta)csc2(θ)