Shenron

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TeX

Your edits to law of tangents prompt some comments:

• If you write <math> a\,tan \alpha</math>, then what you see is this:

$a\,tan\alpha$

But if you write <math> a\tan \alpha\,</math>, then what you see is this:

$a\tan \alpha \,$

The latter is standard. The backslash before "tan" not only prevents italicization but provides proper spacing both before and after "tan". The backslash-comma at the end is needed to make it render properly on some browsers.

• If you write <math> \tan ( \frac{\alpha + \beta}{2})</math>, then you see this:

$\tan({\frac {\alpha +\beta }{2}})$

But if you write <math> \tan \left( \frac{\alpha + \beta}{2}\right)</math>, then you see this:

$\tan \left({\frac {\alpha +\beta }{2}}\right)$

So using \left and \right makes the parentheses adapt to the size of the expression that they enclose. Michael Hardy 01:54, 15 January 2007 (UTC)