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Homework Help: Am I Doing this right?

  1. Oct 30, 2004 #1
    Hello! Could someone tell me if I'm doing this right?

    A jet aircraft is traveling at 310m/s at 35 degrees south of east. What is the southern component of its velocity?

    I used trig to calculate it:

    cos35= x/310
    310cos35 = x
    254 m/s= x

    Apparently the answer is supposed to be 178 m/s. What, if anything, did I do wrong?
  2. jcsd
  3. Oct 30, 2004 #2
    use sin instead of cos
  4. Oct 30, 2004 #3
    Wow, ok, thanks that really helped!
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