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Help me please ! Maths?
An ocean liner is at (6,-6), cruising at 10kmh-1 in the direction (-3,4). A fishing boat is anchored at (0,0). Distance are in kilometers.
a) Write an expression for the position vector of the liner at any time t hours after it has sailed from (6,-6).
b) Find the time when the liner is due east of the fishing boat.
c) Find the tie and positon of the liner when it is nearest to the fishing boat.