Ive tried this problem over and over...There is a diagram that shows two vectors

Question

Ive tried this problem over and over...There is a diagram that shows two vectors and their angles relative to the coordinate axes
https://s3.amazonaws.com/answer-board-image/8b2f6ce8-f459-4a1d-9d3f-e4895c82500c.jpg


alpha=50.3 degrees beta=60.6 degrees and A=2.30cm

Ive calculated the y component of vector B to be -1.77
cm and the x comp of vector A-B to be -4.61..these are correct but I cant figure out how to get the magnitude of the vector A+B correctly..ive tried pythagorus and others..please help!

Explanation / Answer

no we don't. I have uploaded the solution as a jpeg. Follow the link: http://imageshack.us/photo/my-images/534/picture1bo.jpg/

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