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