If the point `(x_(1) +t[x_(2)-x_(1)], y_(1)+t[y_(2)-y_(1)])` divides the join of `(x_(1), y_(1))` and `(x_(2), y_(2))` internally, then

The point whose coordinates are x=x_(1)+t(x_(2)-x_(1)), y=y_(1)+t(y_(2)-y_(1)) divides the join of (x, y) and (x_(2), y_(2)) in the ratio

The coordinates of the midpoint joining P(x_(1),y_(1)) and Q(x_(2),y_(2)) is ....

If x_(1), x_(2), x_(3) are in A.P. and y_(1), y_(2), y_(3) are in A.P. then the points (x_(1), y_(1)), (x_(2), y_(2)), (x_(3), y_(3))

The coordinates of the point which divides the line joining (x_(1),y_(1)) and (x_(2),y_(2))

The co-ordinates of the mid points joining P(x_1,y_1) and Q(x_2,y_2) is….

If A(x_(1), y_(1)), B(x_(2), y_(2)) then the circumradius of DeltaOAB is

If x_(1), x_(2), x_(3) as well as y_(1), y_(2), y_(3) are in G.P with same common ratio, then the points P(x_(1), y_(1)), Q(x_(2), y_(2)) and R(x_(3), y_(3))

If O is the origin and A(x_(1),y_(1)),B(x_(2), y_(2)) are two points then OA*OB*sin angleAOB=

If O is the origin and if A(x_(1), y_(1)), B(x_(2), y_(2)) are two points then OA*OB*cos angleAOB=