Consider vectors u = ⟨2, 1⟩ and v = ⟨4, –1⟩ with the angle between them equal to 40°. What are the scalar projections uv and vu?
2 answers:
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Dividing the parallelogram in half and applying trigonometry is the easiest solution for me.
Well the best answer for LCD is 
is 5(x+3y) and the best answer for LCD is 
is 2(x+3y)
I hope this helps!
I hope this helps!