A straight line `l_1` with equation `x-2y+10=0` meets the circle with equation `x^2+y^2=100` at `B` in the first quadrant. A line through `B` perpendicular to `l_1` cuts the y-axis at `P(o,t)` . The value of `t` is 12 (b) 15 (c) 20 (d) 25

A straight line l_(1) with equation x-2y+10=0 meets the circle with equation x^(2)+y^(2)=100 at B in the first quadrant. A line through B, perpendiclar to l_(1) cuts the x - axis and y - axis at P and Q respectively. The area (in sq. units) of the triangle OPQ is (where, O is the origin)

Find the equation of the straight line through (x_1, y_1) perpendicular to the line joining (x_2, y_2) and (x_3 , y_3) .

The line 7y-x=25 cuts the curve x^(2)+y^(2)=25 at the points A and B. Find the equation of the perpendicular bisector of the line AB.

the line (x)/(a)-(y)/(b)=1 cuts the x -axes at P .the equation of the line passes through point P and perpendicular to the line is:

Find the equation of a straight line drawn perpendicular to the line x/a + y/b =1 through the point where it meets the y-axis.

Find the equation of the line perpendicular to the line (x)/(a)-(y)/(b)=1 and passing through a point at which it cuts the x-axis.

The straight line x+y-1=0 meets the circle .x^(2)+y^(2)-6x-8y=0 at A and B . Then,the equation of : the circle of which AB is a diameter,is