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and 
if their lengths are 
, 
, and the angle between the vectors is 
.
and 
determine the points A, B and C. The point S should be the midpoint of the line AC and the point T the midpoint of the line BC. Use the vectors 
and 
to find out the following vectors:
and 
are given. Express all vectors with the vectors 
and 
. What do the vectors 
and 
. Calculate 
.
, 
and 
are equal to 5. The vectors 
and 
if:
is 6, the vectors 
and 
4, and the length of the vector 
is 5. The vectors lie in the plane as shown in the figure. Calculate the scalar product 
, point P divide the line CD in the ratio 
. Using the vectors 
and 
express the vector 
and calculate 
.
and 
with the given vectors 
and 
. Calculate the scalar product 
.
and 
:
cm, 
cm and 
.
and 
are drawn in the coordinate system. Write these two vectors with components (coordinates). Calculate the vector 
and plot it in the coordinate system. Also calculate the vector 
.
