# RD Sharma Class 11 Chapter 28 Solutions (Introduction To 3D Coordinate Geometry)

RD Sharma Solutions for Class 11 Maths Chapter 28 ‘Introduction To 3D Coordinate Geometry’ can give you in-depth knowledge of coordinate geometry concepts. Until now, you have mostly worked in just two axes in mathematics, the x-axis and the y-axis, that constitute the XY plane. But there is a third axis that also exists along with these two. It is known as the Z-axis, and together these three axes constitute the 3D coordinate geometry. Now you will learn on a three-dimensional plane. From here on, each point will have three axes that will give its coordinates.

RD Sharma Class 11 Chapter 28 will require your imagination power as from now, and you have to think about everything in 3-D. The best way is to understand this by considering your room. Always take one corner of the room as the origin and the three edges will form the axis. This will immensely help you in solving most of the problems.

There are 2 exercises in the chapter with 28 questions. These questions and solutions are well thought to make students well prepared for any variation in the given topic. Upon completion of all the exercises, and after going through the RD Sharma Solutions for Class 11 Chapter 28, you will feel confident enough to face any question from this chapter.

## Topics Covered in RD Sharma for Class 11 Maths Chapter 28 – Introduction To 3D Coordinate Geometry

In RD Sharma Class 11 Maths Chapter 28, first, you will have a quick revision of the basics that you have learned in the previous class, but with just one more coordinate. The things that you will go through in this chapter will be to find the distance of one coordinate from another, the ratio in which some lines are divided by the points. You will also learn about finding the locus in the 3D system.

There are lots of theorems in this chapter which are used solely to prove collinearity. It will help build the conceptual knowledge of this chapter. All the properties of the triangle, rectangle, rhombus, parallelogram are mentioned in brief because you have to prove the coordinates of these figures now in three dimensions. There are discussions of ratio as well, which is subtended on points, lines, and axis.

These topics are explained with natural language and examples. The exercise is made to clear concepts more thoroughly and will help you in exams like JEE Main and JEE Advance. But for that, you need to go through every solution of RD Sharma. This chapter is straightforward once you start using your imagination well. It will help you score easy marks in CBSE exams. The proper application of the formulas is also an important thing to keep in mind, and solutions provided by Instasolv will help you clear that completely.

### Discussion of Exercise of RD Sharma Solutions for Class 11 Maths Chapter 28 – Introduction To 3D Coordinate Geometry

- The first exercise consists of questions on finding the length of the edges in the 3D system. It also has some fundamental questions on naming the octant and finding the image of a point.
- The second exercise consists of a mix of questions on finding the distance between two points and proving the collinearity of points. Towards the end, there are few questions on showing whether the point forms the vertices of some figures. There are also questions on finding the locus.
- The third exercise is a mix of all the above with greater difficulty. It includes finding the ratio, coordinates, collinearity with more complex figures and questions.

### Benefits of RD Sharma Solutions for Class 11 Maths Chapter 28 by Instasolv

With the help of our RD Sharma Class 11 Maths Solutions for Chapter 28, you can solve all your doubts related to the chapter and prepare well for your exams. All the solutions are easy to understand, clear and stepwise. Now, you can learn whenever you want and score well in your exams.