Here is a question
I am confused about the usage of cotg in this formula. How was this formula calculated?
If we use only tg we'd get
This angle regards the angle of the side , correct?
I'm no pro in co-trigonometric functions but,
Will this, in any way, relate to the fundamental propriety of cotg=A/O?
Trigonometric functions on non right angles are rather strange.
I guess I didn't know how to put the central angle part in proper terms. Thanks for the explanation.
Though I'm kind of confused of where does the 2 in comes from.
Maybe we have a two there because is actually ?
Ok this was very confusing before your explanation.
I hope I got it right!
Thanks again Plato!