Mathematics, 21.05.2021 06:10 amortegaa805

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$\frac{cos\theta - sin^2\theta +1}{sin \theta(1+cos \theta )} = cot \theta$
$\frac{tan\theta +sin \theta}{tan\theta - sin\theta} =\frac{sec\theta +1 }{sec \theta -1}$

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