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

Ex 9.1

Ex 9.1, 1

Ex 9.1, 2 Important

Ex 9.1, 3 (i)

Ex 9.1, 3 (ii) Important

Ex 9.1, 4

Ex 9.1, 5 Important

Ex 9.1, 6

Ex 9.1, 7 Important You are here

Ex 9.1, 8 Important

Ex 9.1, 9 Important

Ex 9.1, 10 Important

Ex 9.1, 11

Question 1 Deleted for CBSE Board 2024 Exams

Question 2 Important Deleted for CBSE Board 2024 Exams

Question 3 Important Deleted for CBSE Board 2024 Exams

Last updated at May 29, 2023 by Teachoo

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)