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I recently came to know about directed angles.I felt it was a strong convention but didnt understand much of it i understood the basics but I would like to know more about its applications like if we can use sine rule using directed angles and all.Also I would like to know any lookout to when we even use this convention. Any help would be appreciated.Thanks in advance.

Math enthusiast
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    Why close this interesting question ? It is very thorough ! Why this closing frenzy one sees too frequently ? – Jean Marie Nov 11 '20 at 08:31
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    A quick comment: 1) the sine rule is applied on unsigned angles. 2) the concept of "signed angle" has been introduced rather lately, in the mid-19th century (in particular by Chasles). One of its interests is that it allows to unify results that otherwise would be separated in different cases. – Jean Marie Nov 11 '20 at 09:43
  • I agree with @JeanMarie . Why the close votes? I think this is a good question. – K.defaoite Nov 11 '20 at 10:15
  • See this document : http://www.math.ubbcluj.ro/~didactica/pdfs/2018/didmath2018-03.pdf – Jean Marie Nov 11 '20 at 10:18
  • Any lookout to when should i consider using directed angles?? – Math enthusiast Nov 11 '20 at 14:42

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