Determine the magnitude of the resultant force and its direction, measured counterclockwise from the

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Determine the magnitude of the resultant force and its direction, measured counterclockwise from the positive x axis. Given: θ=60° F=450N
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Textbooks:
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Fundamentals of Engineering Thermodynamics 8th Edition (Wiley):
Moran, M. J., et. al., 2014, Fundamentals of Engineering Thermodynamics, 8th ed., Wiley, Hoboken, NJ.
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Engineering Mechanics Statics (Pearson):
Hibbeler, R. C. Engineering Mechanics Statics. Pearson Prentice Hall, Pearson Education, 2016.
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A little extra work, using law of cosines. Its easier, to just add -24.808degrees to 180 degress

davidperez
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is it possible if we do the question in Cartesian Form using i and j. Because I keep getting wrong answer. Thank you!

obadafattal
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I have the same exact question but with the Fr and with out the angle and F force and I don't know how to solve it 😭

ayabaker
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I thought we only use cosine law when there was no complete pair... And 497N and 45° is a complete pair... By the way, thank you for this video it helps a lot

adriennevictormanlosa