Current location - Training Enrollment Network - Mathematics courses - 2o 15 Is there any other way to find the angle mon of the mathematics problem in Hainan senior high school entrance examination?
2o 15 Is there any other way to find the angle mon of the mathematics problem in Hainan senior high school entrance examination?
(1), the angle MOC=30 degrees, the angle NOC= 15 degrees, and the angle MON=45 degrees. (2) given the angle AOB=a and other conditions unchanged, the angle AOC=a-30 degrees, then the angles AOC(3) and (4) of the angle MOC= 1/2 can be in the above manner.