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Cartesian Co-ordinate System Video Lecture | Civil Engineering Optional Notes for UPSC

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FAQs on Cartesian Co-ordinate System Video Lecture - Civil Engineering Optional Notes for UPSC

1. What is a Cartesian coordinate system?
Ans. A Cartesian coordinate system is a mathematical system that defines each point in space by a unique set of numerical coordinates. It consists of two perpendicular lines, known as the x-axis and y-axis, where the point of intersection is called the origin.
2. Who invented the Cartesian coordinate system?
Ans. The Cartesian coordinate system was invented by the French mathematician and philosopher René Descartes in the 17th century. The system revolutionized mathematics by providing a way to describe geometric shapes algebraically.
3. How do you plot points on a Cartesian plane?
Ans. To plot a point on a Cartesian plane, you first locate the origin (0,0). Then, move along the x-axis to the right if the x-coordinate is positive or to the left if it is negative. After that, move along the y-axis upwards if the y-coordinate is positive or downwards if it is negative. The point where the two values intersect is where the point is plotted.
4. What are the four quadrants in a Cartesian coordinate system?
Ans. The Cartesian coordinate system is divided into four quadrants: the first quadrant is where both the x-coordinate and y-coordinate are positive, the second quadrant is where the x-coordinate is negative and the y-coordinate is positive, the third quadrant is where both the x-coordinate and y-coordinate are negative, and the fourth quadrant is where the x-coordinate is positive and the y-coordinate is negative.
5. How is distance calculated between two points on a Cartesian plane?
Ans. The distance between two points on a Cartesian plane can be calculated using the distance formula: √((x2-x1)^2 + (y2-y1)^2), where (x1,y1) and (x2,y2) are the coordinates of the two points.
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