The equivalent angle of tan Ø = 1.2842 is?
atan(1.2842) = 52.09228966811 degrees
this is just the first quadrant angle - do you need the others?
oh...and...
\(atan(1.2842) \;\;is\;\;the\;\;same\;\;as\;\; tan^{-1}(1.2842)\)