Question

Given: A = 2i- j+2k and B =-î-j+k. The unit vector of Ā-Bis​

Answer 1

Answer:

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Explanation:

a = 2 i + j + 2 k and b = - i + j -k

a + b = i + 2 j + k

| a + b | = [ (1)² + (2)² + (1)²]½ = √6

Unit vector in the direction of vector a + b = ( 1/√6)[ i + 2 j + k]