The side AB,BC,CD and DA of a quadrilateral are `x+2y=3, x=1, x-3y=4, 5x+ y+12=0` respectively. The angle between diagonas AC and BC is

The side AB,BC,CD and DA of a quadrilateral are x+2y=3, x=1, x-3y=4, 5x+ y+12=0 respectively. The angle between diagonals AC and BD is

The sides AB,BC , CD and DA of a quadrilateral have the equations x+2y=3,x=1,x-3y=4and5x+y+12=0 repectively . Find the angle between the diagonals AC and BD.

Let the equations of the sides PQ, QR, RS and SP of a quadrilateral PQRS are x+2y-3=0, x-1=0, x-3y-4=0 and 5x+y+12=0 respectively. If theta is the angle between the diagonals PR and QS, then the value of |tan theta| is equal to

Let the equations of the sides PQ, QR, RS and SP of a quadrilateral PQRS are x+2y-3=0, x-1=0, x-3y-4=0 and 5x+y+12=0 respectively. If theta is the angle between the diagonals PR and QS, then the value of |tan theta| is equal to

The equations of the sides AB, BC and CA of a triangle ABC are x-2=0, y+1=0 and x + 2y - 4=0 respectively. What is the equation of the altitude through B on AC?

The equations of two equal sides AB and AC of an isosceles triangle ABC are x + y = 5 and 7x - y = 3 respectively. What will be the equation of the side BC if area of triangle ABC is 5 square units.

In a triangle ABC , if the equation of sides AB,BC and CA are 2x- y + 4 = 0 , x - 2y - 1 = 0 and x + 3y - 3 = 0 respectively , The equation of external bisector of angle B is

In a triangle ABC , if the equation of sides AB,BC and CA are 2x- y + 4 = 0 , x - 2y - 1 = 0 and x + 3y - 3 = 0 respectively , The equation of external bisector of angle B is

The equations of perpendicular bisectors of the sides AB and AC of a DeltaABC are x - y + 5 = 0 and x+2y = 0 , respectively. If the point A is (1, - 2) the equation of the line BC is