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Math Help - vector

  1. #1
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    vector

    find the resultant of subtracting the following vectors 1.48m,74degrees-2.16m,-34degrees if someone could answer i have been stuck on it for a while thanx
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    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by ksizzle View Post
    find the resultant of subtracting the following vectors 1.48m,74degrees-2.16m,-34degrees if someone could answer i have been stuck on it for a while thanx
    since this is high school math, i doubt we can get more sophisticated than the following idea. but then again, i don't remember much about high school--it was a blur

    try graphing the vectors on a pair of axes. you should be able to use trig ratios to find the x and y co-ordinates of each.

    let (a,b) be the coordinates of the first and (c,d) the coordinates of the second.

    then you want the vector that terminates at (a - c, b - d). then you can describe that point in terms of its distance from the origin and the angle it makes with the positive x-axis
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