Đề bài

Hoàn thành bảng sau:

Lời giải chi tiết

Ta có:  1) \({15^o} = 15.\frac{\pi }{{{{180}^0}}} = \frac{\pi }{{12}}\).                                   2) \(\frac{{3\pi }}{8} = \frac{{3\pi }}{8}.{\left( {\frac{{180}}{\pi }} \right)^0} = 67,{5^o}\). 3) \({0^o} = 0.\frac{\pi }{{{{180}^o}}} = 0\). 4) \({900^o} = 900.\frac{\pi }{{{{180}^0}}} = 5\pi \). 5) \( - \frac{{7\pi }}{{12}} = \left( { - \frac{{7\pi }}{{12}}} \right).{\left( {\frac{{180}}{\pi }} \right)^o} = {- 105^0}\). 6) \( - \frac{{11\pi }}{8} =  - \frac{{11\pi }}{8}.{\left( {\frac{{180}}{\pi }} \right)^o} = - 247,{5^o}\).