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If vec a , vec b and vec c are three n...

If ` vec a , vec b` and ` vec c` are three non-zero, non coplanar vector ` vec b_1= vec b-( vec bdot vec a)/(| vec a|^2) vec a` , ` vec c_1= vec c-( vec cdot vec a)/(| vec a|^2) vec a+( vec bdot vec c)/(| vec c|^2) vec b_1` , `, c_2= vec c-( vec cdot vec a)/(| vec a|^2) vec a-( vec bdot vec c)/(| vec b_1|^2)` , `b_1, vec c_3= vec c-( vec cdot vec a)/(| vec c|^2) vec a+( vec bdot vec c)/(| vec c|^2) vec b_1` , ` vec c_4= vec c-( vec cdot vec a)/(| vec c|^2) vec a=( vec bdot vec c)/(| vec b|^2) vec b_1` then the set of orthogonal vectors is `( vec a , vec b_1, vec c_3)` b. `( vec a , vec b_1, vec c_2)` c. `( vec a , vec b_1, vec c_1)` d. `( vec a , vec b_2, vec c_2)`

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