+510 A robot moved 10 meters towards north. It then turned 45^\circ to its right and moved another 15 meters. It then turned 45^\circ to its left and moved another 20 meters. Last, it turned x^\circ to its right. The robot was facing south after the last move. What is x?
+37153 North = 0 degrees
turn 45 degrees R then 45 degrees L and it is agan facing north .....then turn 'x' = 180 degrees to face south
