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# RD Sharma Solution for Class 11 Science Mathematics Chapter 28 - Introduction to 3-D coordinate geometry

Our RD Sharma Textbook Solutions are considered extremely helpful for solving the tough questions which are asked in the CBSE Class 11 exam. TopperLearning Textbook Solutions are compiled by subject experts. Herein, you can find all the answers to the textbook questions for Chapter 28 - Introduction to 3-D coordinate geometry.

All our solutions are created in accordance with the latest CBSE syllabus, and they are amended from time to time to provide the most relevant answers. Our free RD Sharma Solutions for CBSE Class 11 Mathematics will strengthen your fundamentals in Mathematics and will help you in your attempts to score more marks in the final examination. CBSE Class 11 students can refer to our solutions any time — while doing their homework and while preparing for the exam.

Exercise/Page

## RD Sharma Solution for Class 11 Science Mathematics Chapter 28 - Introduction to 3-D coordinate geometry Page/Excercise 28.1

Solution 1(i)

All are positive, so octant is XOYZ

Solution 1(ii)

X is negative and rest are positive, so octant is X'OYZ

Solution 1(iii)

Y is negative and rest are positive, so octant is XOY'Z

Solution 1(iv)

Z is negative and rest are positive, so octant is XOYZ'

Solution 1(v)

X and Y are negative and Z is positive, so octant is X'OY'Z

Solution 1(vi)

All are negative, so octant is X'OY'Z'

Solution 1(vii)

Y and Z are negative, so octant is XOY'Z'

Solution 1(viii)

X and Z are negative, so octant is X'OYZ'

Solution 2(i)

YZ plane is x-axis, so sign of x will be changed. So answer is (2, 3, 4)

Solution 2(ii)

XZ plane is y-axis, so sign of y will be changed. So answer is (-5, -4, -3)

Solution 2(iii)

XY-plane is z-axis, so sign of Z will change. So answer is (5, 2, 7)

Solution 2(iv)

XZ plane is y-axis, so sign of Y will change, So answer is (-5, 0, 3)

Solution 2(v)

XY plane is Z-axis, so sign of Z will change So answer is (-4, 0, 0)

Solution 3

Vertices of cube are

(1, 0, -1) (1, 0, 4) (1, -5, -1)

(1, -5, 4) (-4, 0, -1) (-4, -5, -4)

(-4, -5, -1) (4, 0, 4) (1, 0, 4)

Solution 4

3-(-2)=5, |0-5|=5, |-1-4|=5

5, 5, 5 are lengths of edges

Solution 5

5-3=2, 0-(-2)=2, 5-2=3

2, 2, 3 are lengths of edges

Solution 6

Solution 7

(-3, -2, -5) (-3, -2, 5) (3, -2, -5) (-3, 2, -5) (3, 2, 5)

(3, 2, -5) (-3, 2, 5)

Solution 1

Solution 2

Solution 3(i)

Solution 3(ii)

Solution 3(iii)

Solution 4(i)

Solution 4(ii)

Solution 4(iii)

Solution 5

Solution 6

Solution 7

Solution 8

Solution 9

Solution 10

Solution 11

Solution 12

Solution 13

Solution 14

Solution 15

Solution 16

Solution 17

Solution 18

Solution 19

Solution 20(i)

Solution 20(ii)

Solution 20(iii)

Solution 21

Solution 22

Solution 23

Solution 24

Solution 20(iv)

Solution 1

Solution 2

Solution 3

Solution 4

Solution 5

Solution 6

Solution 7

Solution 8

Solution 9

Solution 10

Solution 11

Solution 12

Solution 13

Solution 14

Solution 15

Solution 16

## Browse Study Material

TopperLearning provides step-by-step solutions for each question in each chapter in the RD Sharma textbook for class 11. Access the CBSE Class 11 Mathematics Chapter 28 - Introduction to 3-D coordinate geometry for free. The textbook questions have been solved by our subject matter experts to help you understand how to answer them. Our RD Sharma Textbook Solutions will help you to study and revise, and you can easily clear your fundamentals of Chapter 28 - Introduction to 3-D coordinate geometry.

# Text Book Solutions

CBSE XI Science - Mathematics

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