Автор - AnastasiaVasileva

cos 24 градуса * cos 31 градус -sin 24 градуса*sin31 градус =

Ответ

Автор - vifi
cos(24°) * cos(31°) - sin(24°)*sin(31°)= cos(2*пи/15)*cos(31*пи/180)-sin(2*пи/15)*sin(31*пи/180)= ок. 0.573576436351046

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