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TOPIC 9 VECTOR ALGEBRA

58 to the sum of the other two, find a b c . (iv) Projection of a vector LEVEL – I 1. Find the projection of a on b if a. b = 8 and b = 2ˆi + 6ˆj + 3kˆ. 2. Write the projection of the vector iˆ-ˆj on the vector ˆi +ˆj [ CBSE 2011] 3.Find the angle between the vectors iˆ-2ˆj + 3kˆ and 3iˆ-2ˆj + kˆ 4.