A(1,0) B(0,1) P(cosM,sinM)
(1) S=OA*OP*sinM=sinM
Q(cosM+1,sinM)
向量OA×向量OQ+S=√2sin(45°+M)+1
最大值= √2+1
(2)CBIIOP 1/sinM=2/cosM 求得 sin2M=4/5 cos2M=3/5
sin(2M-派/6)=(4√-3)/10
A(1,0) B(0,1) P(cosM,sinM)
(1) S=OA*OP*sinM=sinM
Q(cosM+1,sinM)
向量OA×向量OQ+S=√2sin(45°+M)+1
最大值= √2+1
(2)CBIIOP 1/sinM=2/cosM 求得 sin2M=4/5 cos2M=3/5
sin(2M-派/6)=(4√-3)/10