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Adding vector problem

  1. Nov 10, 2015 #1
    11.jpg
    Ive done the basic trig functions and the result is different. It came out as 45 45 90 triangle and i found the h for it and done sin45 = h/c to get vector C. Am i missing something with vectors?
     
  2. jcsd
  3. Nov 10, 2015 #2
    Assuming magnitudes of vector a and vector be be to be equal to |a|, the resultant will have magnitude = 2*|a|*sin (45/2)
     
  4. Nov 10, 2015 #3
    Thanks for respond but i was just about to say that i solved it. It was my fault in squaring formula.
     
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