me assume yu yuzed invers trig funkshun, such as invers tangent
Just bout all kalkulaters & puter programs giv anser in quadrant 1 & 4
ie, abs(anser)<=90 deg
the reel werk the algorithm du...oenlee werk on 0 thru 90 deg
180 deg spred kuver all possabel inputs tu invers trig funkshuns
me ges its possabel sumwon mite chuez 0 thru 180 deg insted