The difference between radii of smaller and larger circles whose centres lie on the circle x2+y2+4x-6y-23=0 and pass through the points (5,12) is

the towers of a parabolic suspension bridge Are 100 meters apart and each tower stands 40 m above the road. At its closest point, the main cable which forms the parabola is 5 m above the road...

The Oval Office I’m washington DC is an ellipse with key features of the room located on the foci, 7 feet 5 inches from the walls (89 inches). The rooms total length is 35 feet 10 inches (430 inches)...

A stair-case of length 'L' rests against a vertical wall and a floor of a room. Let P be a point on the stair-case nearer to its end on the wall, that divides its length in the ratio 1:2.If the stair-case...

derive the equation of an ellipse given foci

derive the equation of an ellipse given foci

derive the equation of an ellipse given foci

A stair-case of length 'L' rests against a vertical wall and a floor of a room. Let P be a point on the stair-case nearer to its end on the wall, that divides its length in the ratio 1:2.If the stair-case...