tay5876 29/03/2016 A20 = 24 r = 6 a1 = ?a20 = 24a1 + 19r = 24a1 + 19.6 = 24a1 + 114 = 24a1 = 24 - 114a1 = - 90PA( - 90, - 84, - 78, - 72, - 66, - 60, - 54, - 48, - 42, - 36, - 30, - 24, - 18, - 12, - 6, 0, 6, 12, 18, 24 )
tay5876
A20 = 24 r = 6 a1 = ?
a20 = 24
a1 + 19r = 24
a1 + 19.6 = 24
a1 + 114 = 24
a1 = 24 - 114
a1 = - 90
PA( - 90, - 84, - 78, - 72, - 66, - 60, - 54, - 48, - 42, - 36, - 30, - 24, - 18,
- 12, - 6, 0, 6, 12, 18, 24 )