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1. Вычислить sin [tex] \alpha [/tex], если cos [tex] \alpha [/tex]=-[tex] \frac{24}{25} [/tex] и π<[tex] \alpha [/tex]<[tex] \frac{3\pi}{2} [/tex]
2. Вычислить cos [tex] \alpha, если sin [tex] \alpha [/tex]=[tex] \frac{12}{13} и \frac{\pi}{2} \ \textless \ \alpha \ \textless \ \pi [/tex]
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