Long Answer Type
Short Answer TypeIf the vertices A, B, C of ∆ ABC have position vectors (1, 2. 3), (– 1, 0, 0), (0, 1, 2) respectively, what is the magnitude of ∠ABC?
Long Answer Type
with a unit vector along the sum of vectors 
and 
is equal to 1. Find the value of λ.
makes angle 
and an acute angle 
with 
, then find the component of 
and the angle 
.
Short Answer TypeLong Answer Type
makes angles 
with 
and acute angle 
with 
, then find the components of 
and the angle 
.
form the vertices of a right angled triangle. 
forms the sides of a right-angled triangle. Also, find the remaining angles of the triangle.
Switch
form a right angled triangle.
are mutually 
Find a vector 
which is perpendicular to both 
