If `vec x` and `vec y` are two non-collinear vectors and ABC is a triangle with side lengths a,b and c satisfying (20a-15b)`vec x` + (15b-12c)`vec y` + (12c-20a)`vec x xx vec y` is:

If vec x and vec y are two non-collinear vectors and ABC is a triangle with side lengths a,b and c satisfying (20a-15b)vec x+(15b-12c)vec y+(12c- 20a) vec x xxvec y is:

If vec x and vec y are two non-collinear vectors and ABC isa triangle with side lengths a,b, and satisfying (20a-15b)vec x+(15b-12c)vec y+(12c-20a)(vec xxvec y)=0 then triangle ABC is a.an acute-angled triangle b.an obtuse- angled triangle c.a right-angled triangle d.an isosceles triangle

If vec x andvec y are two non-collinear vectors and a triangle ABC with side lengths a,b,c satisfying (20a-15b)vec x+(15b-12c)vec y+(12c-20a)(vec x xx vec y) = vec0 . Then triangle ABC is:

If vec xa n d vec y are two non-collinear vectors and a, b, and c represent the sides of a A B C satisfying (a-b) vec x+(b-c) vec y+(c-a)( vec xxx vec y)=0, then A B C is (where vec xxx vec y is perpendicular to the plane of xa n dy ) a. an acute-angled triangle b. an obtuse-angled triangle c. a right-angled triangle d. a scalene triangle

vec a and vec b are two non-collinear unit vectors vec a,vec b,xvec a-yvec b form a triangle.

veca , vec b , vec c are non-coplanar vectors and x vec a + y vec b + z vec c = vec 0 then

If vec b and vec c be any two non-collinear vectors,and vec a be any vector then (vec a*vec b)vec b+(vec a*vec c)vec c+(vec a*(vec b xxvec c))/(|vec b xxvec c|^(2))(vec b xxvec c) is equal to

If vec b and vec c be any two non-collinear vectors,and vec a be any vector then (vec a*vec b)vec b+(vec a*vec c)vec c+(vec a*(vec b xxvec c))/(|vec b xxvec c|^(2))(vec b xxvec c) is equal to

If vec b and vec c are two non-collinear vectors such that vec a*(vec b+vec c)=4 and vec a xx(vec b xxvec c)=(x^(2)-2x+6)vec b+(sin y)vec c then the point (x,y) lies on

If vec a and vec b are non-collinear vectors,find the value of x for which the vectors vec alpha=(2x+1)vec a-vec b and vec beta=(x-2)vec a+vec b are collinear.