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if the vectors ai+j+k,i+bj+k,i+j+ck (a not egual to 1,b is not equal to 1,c is not equal to 1)are coplanar, then the value of 1/1-a+1/1-b+1/1-c is equal to

if the vectors ai+j+k,i+bj+k,i+j+ck (a not egual to 1,b is not equal to 1,c is not equal to 1)are coplanar, then the value of 1/1-a+1/1-b+1/1-c is equal to

Grade:12th pass

1 Answers

ng29
1698 Points
8 years ago
Answer is 1
if vectors are coplanar then determinant formed by their coefficients is 0
        a  1   1
        1   b  1      =   0
        1   1  c
now it becomes question of determinat and easily solvable
use operations and then expand to get the desired result
if not able to solve then reply i  am  leaving it for u to solve it
approve if useful

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