Question

Two vector's A and B are given as 2i+3j-k and i-2k-3j respectively. then unit vector of (A+B) is given by​

Answer 1

A+B = (2i+3j-k)+(i-3j-2k)

= 3i-3k

|A+B| = √(3)²+(3)²

= √18 = 3√2

unit vector = 3i-3j

3√2

= 3(i-j)

3√2

= i-j

√2

= 1 (i-j)

√2

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