A car is going around a quarter-circle from north to east. When halfway around the car's acceleration is (2m/s^2 , 15 degrees south of east). At this point, what is the COMPONENT of acceleration (1) tangent to the circle and (2) perpendicular to the circle? Well I know that if I draw a line Tangent to the circle and then a line Perpendicular to the Tangent line I have created a X-Y coordinate system that is tilted. After this point I am stuck and not sure where to go. Any help would be great.