[" 8.Let "ABC" be a triangle,the position vectors of whose "],[" vertices are respectively "7hat j+10hat k,-hat i+6hat j+6hat k" and "],[-4hat imath+9hat jmath+6hat k." Then,"Delta ABC" is "]

Let ABC be a triangle, the position vectors of whose vertices are respectively 7 hatj + 10 hatk , -hati + 6 hat j + 6 hatk and -4 hati + 9 hatj + 6 hat k . " Then, " Delta ABC is

Let ABC be a triangle, the position vectors of whose vertices are respectively 7 hatj + 10 hatk , -hati + 6 hat j + 6 hatk and -4 hati + 9 hatj + 6 hat k . " Then, " Delta ABC is

Let ABC be a triangle,the position vectors of whose vertices are 7hat j+10hat k,-hat i+6hat j+6hat k and -4hat i+9hat j+6hat k. Then Delta ABC is a.isosceles b.equilateral c.right angled d.none of these

Let ABC be a triangle, the position vectors of whose vertices are 7hat(j)+10hat(k), -hat(i)+6hat(j)+6hat(k) " and " -4hat(i)+9hat(j)+6hat(k) . Then DeltaABC is -

Find the area of the triangle whose positive vectors of the vertices are 6hat(i), 3hat(j) and -2hat(i)

Find the median vec(AD) of the triangle ABC where positive vectors of the vertices A, B and C are respectively hat(i) + hat(j), 4hat(i) + 6hat(j), hat(i) - hat(j)

If the position vectors of the vertices of a triangle be 2hat(i)+4hat(j)-hat(k), 4hat(i)+5hat(j)+hat(k) and 3hat(i)+6hat(j)-3hat(k) , then the triangle is

Prove that the points whose position vectors are 6 hat i - 7 hat j, 16 hat i -29 hat j -4 hat k , 3 hat j -6 hat k and 2 hat i+5 hat j +10 hat k are coplanar.

Find the sum of vectors vec a=hat i-2hat j+hat k,vec b=-2hat i+4hat j+5hat k and vec c=hat i-6hat j-7hat k