1.

Let A(1, 2, 3), B(0, 0, 1) and C(-1, 1, 1) are the vertices of triangleABC. Q. The equation of altitude through B to side AC is

Answer»

`r=K+t(7hat(i)-10hat(J)+2HAT(k))`
`r=k+t(-7hat(i)+10hat(j)+2hat(k))`
`r=k+t(7hat(i)-10hat(j)-2hat(k))`
`r=k+t(7hat(i)+10hat(j)+2hat(k))`

ANSWER :(B)


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