A and B are unit vectors with an angle of 120 degrees between them.  Determine magnitude of 3A + 2B.   ) (TIPS

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To find the magnitude of 3A + 2B, we need to add 3A and 2B.

The angle between A and B is given as 120 degrees. The component of 3A in the direction of 2B is given by -3A* cos 30.

So we have 2B -...

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