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PROBLEMS 3.17Select the correct answer o...

PROBLEMS 3.17Select the correct answer or fill up the blanks in each of the following questions :1. The line x = ay + 6,2 =cy + d and x = a'y +b', z = C' y + d' are perpendicular if(a) aa' + cc'=1 (6) aa' + cc' =-1 (c) bb' + dd' =1 (d) bb' + dd' =-1.x + 1+ 32 + 2

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