Question:
The distance of the origin from the centroid of the triangle whose two sides have the equations
x – 2y + 1 = 0 and 2x – y – 1 = 0 and whose orthocenter is (7/3, 7/3) is :
The distance of the origin from the centroid of the triangle whose two sides have the equations
x – 2y + 1 = 0 and 2x – y – 1 = 0 and whose orthocenter is (7/3, 7/3) is :
x – 2y + 1 = 0 and 2x – y – 1 = 0 and whose orthocenter is (7/3, 7/3) is :
Updated On: Nov 20, 2025
- √2
- 2
- 2√2
- 4
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The Correct Option is A
Solution and Explanation
The correct answer is (C) : \(2\sqrt2\)
AB = x – 2y + 1 = 0
AC = 2x – y - 1 = 0
So A(1, 1)
Altitude from B is BH \(= x + 2y – 7 = 0 ⇒ B (3, 2) \)
Altitude from C is CH \(= 2x + y – 7 = 0 ⇒ C (2, 3) \)
Centroid of ΔABC = E(2, 2) OE = \(2\sqrt2\)
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Concepts Used:
Coordinate Geometry
Coordinate geometry, also known as analytical geometry or Cartesian geometry, is a branch of mathematics that combines algebraic techniques with the principles of geometry. It provides a way to represent geometric figures and solve problems using algebraic equations and coordinate systems.
The central idea in coordinate geometry is to assign numerical coordinates to points in a plane or space, which allows us to describe their positions and relationships using algebraic equations. The most common coordinate system is the Cartesian coordinate system, named after the French mathematician and philosopher René Descartes.
The central idea in coordinate geometry is to assign numerical coordinates to points in a plane or space, which allows us to describe their positions and relationships using algebraic equations. The most common coordinate system is the Cartesian coordinate system, named after the French mathematician and philosopher René Descartes.