SOLUTION: <p>This is about magnitudes and vectors.&nbsp;</p> <p><a title="https://imgur.com/I4a8zht" rel=nofollow HREF="https://imgur.com/I4a8zht" target="_blank" rel="noopener">https://im

Algebra.Com
Question 1102736:

This is about magnitudes and vectors. 


https://imgur.com/I4a8zht


I'm sorry, I didn't know how to draw the triangle with angles. Thank you in advance!
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
Translate u & v to make a parallelogram.
The long diagonal is the resultant, the sum.
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You have 2 sides and the included angle (115 degs).
Use the Cosine Law to find the diagonal.
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then use the Law of Sines to find the angle at the left vertex of the triangle.
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