1. Find the angle between the vectors
A =2î - 4ſ + 6 and B = 3 î + ſ + 2 k.
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Answer:
cos()= √6²+4²+12²/[√2²+4²6²×√3²+1²+2²]
cos()= √196/√56×√14
cos()= 14/28
cos()=1/2
thus,()= π/3
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