If A,B,C are points (1,0,-1), (0,1,-1) and (-1,0,1)` respectively find the sine of the angle between the lines AB and AC.

If A,B,C are the points (1,0,2), (0,3,1) and (5,2,0) respectively, find mangleABC

If A, B, C are the points (0, 4, 1), (2, 3, -1), (4, 5, 0) respectively, then angle between oversetharr(AB) " and " oversetharr(BC) is

If the vertices A,B,C of a triangle ABC have position vectors (1,2,3),(-1,0,0)(0,1,2) respectively then find angle ABC (angle ABC is the angle between the factors BA and BC).

If A,B,C are points (0,4,1), (2,3,-1), ), (4,5,0) find the angle that AB makes with BC.

If either vector A,B,C of a triangle ABC are (1,2,3),(-1,0,0),(0,1,2), respectively , then find angleABC.[angleABC is the angle between the vectors vec(BA)andvec(BC) ].

Consider the points A(0,-2,1),B(1,-1,-2) and C(-1,1,0) lyind in the plane. Compute vec(AB) and vec(AC) .

Consider the points A(0,-2,1),B(1,-1,-2) and C(-1,1,0) lyind in the plane. Find vec(AB)xxvec(AC)

Given that A,B,C are the points (2,1,-1),(3,2,-1)and(3,1,0). Find oversetrarr(AB)" and " oversetrarr(AC) .Hence, find the angle between oversetrarr(AB) " and " oversetrarr(AC).