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# RD Sharma Solution for Class 12 Science Mathematics Chapter 27 - Direction Cosines and Direction Ratios

Our RD Sharma Textbook Solutions are considered extremely helpful for solving the tough questions which are asked in the CBSE Class 12 exam. TopperLearning Textbook Solutions are compiled by subject experts. Herein, you can find all the answers to the textbook questions for Chapter 27 - Direction Cosines and Direction Ratios.

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 12 Mathematics will strengthen your fundamentals in Mathematics and will help you in your attempts to score more marks in the final examination. CBSE Class 12 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 12 Science Mathematics Chapter 27 - Direction Cosines and Direction Ratios Page/Excercise 27.1

Solution 1

Let l, m and n be the direction cosines of a line.

l = cos 90° = 0   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(i)  Solution 16(ii)  Solution 16(iii)  Solution 16(iv) ## RD Sharma Solution for Class 12 Science Mathematics Chapter 27 - Direction Cosines and Direction Ratios Page/Excercise MCQ

Solution 1

Correct option: (c)

Every point on xy-plane z co-ordinate is always zero.

Solution 2

Correct option: (c)

Point (x, y, z) is on the x-axis. Hence, y and z co-ordinate will be zero except the origin.

Solution 3

Correct option: (d)

Coordinates of the points given are diagonally opposite vertices of a parallelepiped. Hence, edges of parallelepiped can be 5-2, 7-3, 9-7 3,4,2.

Solution 4

Correct option : (a) Solution 5

Correct option: (b) Solution 6

Correct option: (c) Solution 7

Correct option: (a) Solution 8

Correct option: (b) Solution 9

Correct option: (b) Solution 10

Correct option: (a) Solution 11

Correct option: (a)

Directions of OP from the origin

(-1,2,-2)=(x,y,z)

Solution 12

Correct option: (d) Solution 13

Correct option: (c) ## RD Sharma Solution for Class 12 Science Mathematics Chapter 27 - Direction Cosines and Direction Ratios Page/Excercise 27VSAQ

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 Solution 17 Solution 18 Solution 19 Solution 20 ## Browse Study Material

### Browse questions & answers

TopperLearning provides step-by-step solutions for each question in each chapter in the RD Sharma textbook for class 9. Access the CBSE Class 9 Mathematics Chapter 27 - Direction Cosines and Direction Ratios 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 27 - Direction Cosines and Direction Ratios.

# Text Book Solutions

CBSE XII Science - Mathematics

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