all possible angles of a trig ratio

[red and white kop!]

is there a methodical way to find all the possible angles of a given trig ratio? that is a regular method of working through all the known laws of that ratio (such as sinA= (pi - A) or -sinA = (2pi - A))? personally i often get tangled up in these properties and am constantly turning up with the same or negative angles. :evil:

 

[Deleted member 4993]

is there a methodical way to find all the possible angles of a given trig ratio? that is a regular method of working through all the known laws of that ratio (such as sinA= (pi - A) or -sinA = (2pi - A))? personally i often get tangled up in these properties and am constantly turning up with the same or negative angles. :evil:

Show us a problem where you are getting tangled up - we'll try to untangle you.