Check sibling questions

Ex 9.1, 7 - Chapter 9 Class 11 Straight Lines

Last updated at May 29, 2023 by

Ex 10.1, 7 - Find slope of line, which makes angle 30 - Ex 10.1

Ex 10.1, 7 - Chapter 10 Class 11 Straight Lines - Part 2

Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class

Book a free demo

Transcript

Ex 9.1, 7 Find the slope of the line, which makes an angle of 30° with the positive direction of y-axis measured anticlockwise. The line makes angle of 30° from positive y axis Hence it makes angle of (90° + 30°) from positive x axis i.e. 120° from positive x axis Hence θ = 120° Slope = m = tan θ = tan 120° = tan (180 – 60°) = –tan 60° = –√3 Hence, Slope of line = –√𝟑 (tan(180° – 𝜃) = –tan 𝜃)

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 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.