متطابقات
\( \sin^2 \theta + \cos^2 \theta = 1 \) \( \tan \theta = \frac{\sin \theta}{\cos \theta} \) \( \sec \theta = \frac{1}{\cos \theta} \) \( \csc \theta = \frac{1}{\sin \theta} \) \( \cot \theta = \frac{1}{\tan \theta} = \frac{\cos \theta}{\sin \theta} \) \( \sin(\alpha \pm \beta) = \sin \alpha \cos \beta \pm \cos \alpha \sin …
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