Ex 11.1, 3 - Chapter 11 Class 11 - Intro to Three Dimensional Geometry

Last updated at April 16, 2024 by

Ex 12.1, 3 - Name the octants in which the points lie - Ex 12.1

Ex 12.1, 3 - Chapter 12 Class 11 Introduction to Three Dimensional Geometry - Part 2
Ex 12.1, 3 - Chapter 12 Class 11 Introduction to Three Dimensional Geometry - Part 3

Transcript

Ex 11.1, 3 Name the octants in which the following points lie: (1, 2, 3), (4, –2, 3), (4, –2, –5), (4, 2, –5), (–4, 2, –5), (–4, 2, 5), (–3, –1, 6), (2, –4, –7) (i) (1, 2, 3) Here x is positive, y is positive and z is positive. So it lies in I octant. (4, −2, 3) Here x is positive, y is negative and z is positive. So it lies in IV octant (iii) (4, −2, −5) Here, x is positive, y is negative and z is negative. So, it lies in VIII octant (iv) (4, 2, −5) Here, x is positive, y is positive and z is negative. So, it lies in V octant. (v) (−4, 2, −5) Here, x is negative, y is positive and z is negative. So, it lies in VI octant (vi) (−4, 2, 5) Here, x is negative, y is positive and z is positive. So, it lies in II octant. (vii) (−3, −1, 6) Here, x is negative, y is negative and z is positive. So, it lies in III octant. (2, −4, −7) Here x is positive, y is negative and z is negative. So, it lies in VIII octant.

Ask a doubt
Davneet Singh's photo - Co-founder, Teachoo

Made by

Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.