


Biểu diễn cos15 dưới dạng căn thức như thế nào?
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cos15
- Mối liên hệ giữa cos15 và các loại số khác (ví dụ số siêu việt)?
- Góc 15 độ có ý nghĩa gì trong thiên văn học?
- Các ứng dụng nâng cao của cos15 trong toán học và khoa học?
- cos(6*15) = cos(90) = ?
- Giá trị của biểu thức sin(75)cos(15) - cos(75)sin(15) là bao nhiêu?
- Image formation by lenses and mirrors?
- Tính giá trị của biểu thức cos^6(15) + sin^6(15) là bao nhiêu?
- sin(15 độ) có bằng sin(15 radian) không?
- Mối quan hệ giữa sin15 và sin75 là gì?
- Mối liên hệ giữa cos15 và hàm mũ?
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