06 Jul, 07:42AM in sunny Singapore!
Home → Homework Forum →

Help with A maths Paper.

Subscribe to Help with A maths Paper. 3 post(s)

Please 登入 or 进行注册 to reply.
  • SBS1985C
    SBS1985C's Avatar
    2,029 posts since Sep '05
  • secretliker
    secretliker's Avatar
    160 posts since Dec '06
    • 03 May `08, 12:23AM

      a-b = 6i+8j

      unit vector parallel to a-b

      = (a-b) / | a-b |

      = 6i+8j / 10

      = 1/10 (6i + 8j) ?

      Edited by secretliker 03 May `08, 12:27AM
  • 监管人
    ^tamago^
    ♡ ♡ ♡ ♡
    ^tamago^'s Avatar
    48,689 posts since Sep '03
    • 03 May `08, 12:28AM

      Unit vector = a/|a| = a/√(6²+8²) = a/10 = 3/5i+4/5j

      Edited by ^tamago^ 03 May `08, 12:29AM
Please 登入 or 进行注册 to reply.