Question

从∠AOB的顶点引射线OC,使∠AOC:∠BOC=5:4.当∠AOB=m°时,求∠AOC与∠BOC

Answer 1

∵∠AOC+∠BOC=∠AOB=m°

∠AOC:∠BOC=5:4

∴∠AOC=5/9∠AOB=（5/9）m°

∠BOC=4/9∠BOC=（4/9）m°