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[tex]\frac{4cos^{2}\alpha-4cos^2\alpha+3sin^2\alpha}{4cos^2(\frac{5π}{2}-\alpha)-sin^{2}2(\alpha-π}[/tex]
[tex]\frac{4cos^{2}\alpha-4cos^2\alpha+3sin^2\alpha}{4cos^2(\frac{5π}{2}-\alpha)-sin^{2}2(\alpha-π}[/tex]
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Решение смотри на фотографии