Trong cơ học thống kê, hàm phân vùng có thể chứa các hàm lượng giác. Cos 15 độ có thể xuất hiện trong các hệ thống cụ thể không?

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The purpose of this page is to find in closed form values of sine and cosine of the 15^\circ angle. Our investigation will be based on the following diagram. ... cos 157° cos cj)), ±R cos 6 sin 15r°). Slightly more than half of the ... cos 15 T° = tan0tan<£ .(*) cos 0 cos

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cos 15


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