The value ofis:a)0b)3c)1/3d)1Correct answer is option 'B'. Can you explain this answer?

Question

Answer

Cross multiply in maths take place in cycle like i》j》k i×j=k j×k=i k×i=j but j×i=-k k×j=-i i×k=-j and dotmultiply takes place as i.i=1j.j=1K.K=1BUTI.J=0J.K=0k.i=0so the correct answer is b

Answer

Here, cross product of different two axis is equal to 3rd axis i.e, j^× k^ = i^and dot product of same axis is equal to 1 so lastly if we solve this we get 1+1+1=3 ans.... And one thing is more important here that the product should be taken in clockwise direction generally i.e, i^× j^ = k^  and if we take j^×i^= -k^...which gives u a negative value..........similarly all ..... Thanq...

Answer

i.(j * k) + j.(k * i) + k(i * j)
= i.(i) + j.(j) + k.(k)
= 1 + 1 + 1
= 3

Answer

Cross product of i×j=k, j×k=i ,k×i=j ...and dot product of same dimension is 1 i.e i.i=1,j.j=1, k.k=1 so ans is 3

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