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Homework Help: Vector Components

  1. Jun 5, 2009 #1
    1. The problem statement, all variables and given/known data

    A plane flies from base camp to lake A, a distance of 280km, at a direction of 20 degrees north of east. After dropping thr supplies, it flies to lake B which is 190km and 30 degrees west of north from lake A. Determine the distance and direction gtom lake B to the base camp

    2. Relevant equations
    Axcos theta
    Bysin theta

    r= Sq rt (X^2 + y^2)

    tan - theta = y/x

    3. The attempt at a solution

    280 cos 20 = 263
    280 sin 20 = 95.8

    190cos -30 = 184.5
    190sin -30 = -95

    I tried to add up the components but it doesnt end up being the rigth answer from the book.
  2. jcsd
  3. Jun 5, 2009 #2
    Perhaps recalculate those numbers. In particular what is 190*cos(-30)?
  4. Jun 5, 2009 #3


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    Homework Helper
    Gold Member

    Did you draw a diagram? What did you get for the x and y components of the final vector?
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