(30+5):4=8.75
(30+3):4=8.25
(30+7):4=9.25
(30+8):4=9.5
(30+9):4=9.75
Ответ: 9, 8, 7, 5, 3.
Cos(x-п/2)=0
х-п/2=п/2+пn,n€z
x=п+пn,n€z
A2 = 4+3 = 7
a3 = 7+3 = 10
a4 = 10+3 = 13
a5 = 13+3 = 16
М N P K
.___________.___________._________.
MN=1/4 м
MP=MN+1/8=1/4+1/8=4/16+2/16=6/16 м
PK=MP-5/16=6/16-5/16=1/16 м
MK=MP+PK=6/16+1/16=7/16 м