explain this question. What is this a1 a2 and all??
explain this question. What is this a1 a2 and all?? iPad 8:22 AM a meritnation.com Question:7 What is the projection of on ? View Solution Angle O between two vectors is given by: Here, a, = l,bl Thus, or, 900 The two vectors are perpendicular to each other. Hence, the projection Of on is zero.

Dear Student,

a=2i^-j^, b=2i^+j^prjection of a on b =a.bb=4-14+1=35solution is wrong if two vector are perpendicular then a.b =0  but a.b=3Regards

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Here, a, b and c are coefficients of i cap, j cap and k cap.
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a1 is the coefficient of i cap of 2- j cap, that is 1. b1 is coefficient of j cap that is - 1. c1 is coefficient of k cap that is 1. Similarly for, 2+j cap, a1=1 b1=1 and c1=1
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