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Fireburns92 Fireburns92
wrote...
Posts: 71
Rep: 1 0
11 years ago
Find the result of adding the following vectors.
A = 18.0 meters at an angle of 6.0°
B = 5.00 meters at an angle of 165.°

I thought I was doing it right, but I guess not cause everytime I checked it, it was wrong.
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2 Replies
Replies
wrote...
11 years ago
My personal favorite way to do this is breaking it up into sections. Here's how I would do it:

18cos6 + 5cos165 = 13.07176
18sin6 + 5sin165 = 3.17561

You then use Pythagorean theorem

square root(13.07176)^2 + (3.17561)^2) = 13.451967

That is the length of the vector. to the find the direction you do:

inverse tangent(3.17561/13.07176) = 13.6547 degrees

Is that the answer you should be getting?
Answer accepted by topic starter
michoimichoi
wrote...
Posts: 22
Rep: 1 0
11 years ago
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