英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • What operation is $\\circ$? - Mathematics Stack Exchange
    $\begingroup$ $\circ$ is exactly the operation given by the table, no more, no less It is not addition mod $4$, or multiplication mod $4$, or anything familiar like that
  • trigonometry - How to find the exact value of $ \cos(36^\circ . . .
    BEGIN QUOTE: Ptolemy used geometric reasoning based on Proposition 10 of Book XIII of Euclid's Elements to find the chords of $72^\circ$ and $36^\circ$ That Proposition states that if an equilateral pentagon is inscribed in a circle, then the area of the square on the side of the pentagon equals the sum of the areas of the squares on the sides
  • What is the $\\circ$ symbol in Graph Theory - Mathematics Stack Exchange
    Stack Exchange Network Stack Exchange network consists of 183 Q A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers
  • Trigonometric ratios for angles greater than $90^\\circ$?
    The trigonometric ratios can be defined for angles greater than $0^\circ$ and less than $90^\circ$ using right triangles In particular, $\sin(\theta)$ is defined as the ratio of the lengths of the opposite leg and the hypotenuse, and $\cos(\theta)$ is defined as the ratio of the lengths of the adjacent leg and the hypotenuse
  • Automatically replacing \º with $^\circ$ - LaTeX Stack Exchange
    So I wanted to make a new-command, that's replacing \º with $^\circ$ and i tried to define it like this in the preambel: \newcommand{\º}{$^\circ$} Unfortunatly what happened, was not what I expected: My document got extended by a new first page showing the symbol $^\circ$ and my header, but nothing else And the position where i actually used
  • Prove that $(A \\cap B)^\\circ = A^\\circ \\cap B^\\circ$
    Stack Exchange Network Stack Exchange network consists of 183 Q A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers
  • pi - Is $180^\circ = 3. 14. . $? Correlating the circumference and . . .
    Consider a unit circle and represent it in terms of an n-gon Join each vertex to its center The angle subtended is $\theta^\circ = \frac{360^\circ}{n}$ Now the base of each of these triangles (formed by the radii and the chord on the arc) is of measure $2\sin\left(\frac{\theta^\circ}{2}\right)$ which can be
  • How to prove $(f \\circ\\ g) ^{-1} = g^{-1} \\circ\\ f^{-1}$? (inverse . . .
    Stack Exchange Network Stack Exchange network consists of 183 Q A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers





中文字典-英文字典  2005-2009