显示常用三角函数值
可以轻松创建任意函数的值的表格.
创建 
倍数的基础三角函数的值的表格.
| In[1]:= |  X |
每行包含了三角函数的值.
| In[2]:= |  X |
| Out[2]= |  |
值的精美格式表格.
| Out[3]//TraditionalForm= | |
 | |
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