Задача 21. Расположите в порядке убывания числа:   \(\sin \dfrac{\pi }{7};\,\,\,\,\cos \dfrac{{3\pi }}{5};\,\,\,\sin \dfrac{{10\pi }}{7}\)

1) \(\sin \dfrac{\pi }{7};\,\,\,\,\cos \dfrac{{3\pi }}{5};\,\,\,\sin \dfrac{{10\pi }}{7}\) 2) \(\sin \dfrac{\pi }{7};\,\,\,\,\sin \dfrac{{10\pi }}{7};\,\,\,\,\cos \dfrac{{3\pi }}{5}\)
3) \(\sin \dfrac{{10\pi }}{7};\,\,\,\,\cos \dfrac{{3\pi }}{5};\,\,\,\sin \dfrac{\pi }{7}\) 4) \(\sin \dfrac{{10\pi }}{7};\,\,\,\,\,\sin \dfrac{\pi }{7};\,\,\,\,\cos \dfrac{{3\pi }}{5}\)
5) \(\cos \dfrac{{3\pi }}{5};\,\,\,\sin \dfrac{\pi }{7};\,\,\,\,\sin \dfrac{{10\pi }}{7}\) 6) \(\cos \dfrac{{3\pi }}{5};\,\,\,\sin \dfrac{{10\pi }}{7};\,\,\,\,\sin \dfrac{\pi }{7}\)

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