12=27.73cos(x)
cos(x)=12/27.73=.432744
x=64.36
CPhill: Please verify this.
12=27.73cos(x) divide both sides by 27.73 and we have
cos(x) = 12 / 27.73 to find the solution for x, we need to take the cosine inverse
cos-1 (12/ 27.73) = x = about 64.36°
[Also, this could be the same angle in the 4th quadrant = about 295.64°]