Find the angle between the vectors i^−2j^+3kand 3i^−2j^+k
Let ABC be triangle, the position vecrtors of whose vertices are respectively i^+2j^+4k^ , -2i^+2j^+k^and2i^+4j^−3k^ . Then DeltaABC is a. isosceles b. equilateral c. right angled d. none of these
Let a,bandc be three units vectors such that 2a+4b+5c=0. Then which of the following statement is true? a. a is parallel to b b. a is perpendicular to b c. a is neither parallel nor perpendicular to b d. none of these
If the projections of vector a on x -, y - and z -axes are 2, 1 and 2 units ,respectively, find the angle at which vector a is inclined to the z -axis.
ABC is a triangle and P any point on BC. if PQ is the sum of AP + PB +PC , show that ABPQ is a parallelogram and Q , therefore , is a fixed point.