Q.1 Find a.b and a x b a =i+j+k b= - 5i + 2j– 3k Q2 Find the cosine of the angle between the vectors: a = 4i + 2j-k b=2i+4j-k Q3 Find real numbers x, y and z such that (x + 4)i + (y – 5)j + (z – 1)k= 0

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