The vectors `veca=xhati-2hatj+5hatj and vecb=hati+yhatj-zhatk` are collinear if (A) `x=1,y=-2,z=-5` (B) `x=1/2,y=-4,z=-10` (C) `x=-1/2,y=4,z=10` (D) none of these

If the vectors x hati-3hatj+7hatk and hati+yhatj-zhatk are collinear then the value of (xy^(2))/(z) is equal

If the vectors xhati - 3hatj + 7 hatk and hati + y hatj- z hatk are colliner then the value of (xy^(2))/(z) is equla .

Find the values of x,y and z so that vectors veca=xhati+4hatj+zhatk and vecb=3hati+yhatj+hatk are equal.

Find the values of x,y and z so that the vectors veca=xhati+2hastj+zhatk and vecb=2hati+hatj+hatk are equal.

If |2hati+3hatj+zhatk|=5 then z=

The line of intersection of the planes vecr.(3hati-hatj+hatk)=1 and vecr.(hati+4hatj-2hatk)=2, is (A) (x-6/13)/2=(y-5/13)/-7=z/-13 (B) (x-6/13)/2=(y-5/13)/7=z/-13 (C) (x-4/7)/-2=y/7=(z-5/7)/13 (D) (x-4/7)/-2=y/-7=(z+5/7)/13

If cos^-1x+cos^-1y+cos^-1 z=pi, then (A) x^2+y^2=z^2 (B) x^2+y^2+z^2=0 (C) x^2+y^2+z^2=1 (D) none of these

Find the values of x,y and z so that the vectors 3hati+hatj+4hatk and xhati+yhatj+zhatk are equal,

Find the values of x & y so that vectors 2hati+3hatj and xhati+Yhatj are equal.