Q. 45.0( 1 Vote )

# Find the angle of inclination of the line passing through the points(i) (1, 2) and (2, 3) (ii) and (0, 0)(iii) (a, b) and (–a, –b)

Slope of straight line passing through the points (x1, y1) and (x2, y2) is given by i) Slope of straight line passing through the points (1, 2) and (2, 3) is m = 1

If θ is the angle of inclination of the line, then the slope of the line is

m = tan θ where 0° ≤ θ ≤ 180°, θ ≠ 90°

tan θ = 1 θ = 45°

ii) Slope of straight line passing through the points (3, √3) and (0, 0) is m = √3

If θ is the angle of inclination of the line, then the slope of the line is

m = tan θ where 0° ≤ θ ≤ 180°, θ ≠ 90°

tan θ = √3 θ = 30°

iii) Slope of straight line passing through the points (a, b) and (–a, –b) is  If θ is the angle of inclination of the line, then the slope of the line is

m = tan θ where 0° ≤ θ ≤ 180°, θ ≠ 90° Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos  Section Formula30 mins  Champ Quiz | Previous Year NTSE QuestionsFREE Class  Measuring distance by Distance formula49 mins  Champ Quiz | Distance Formula30 mins  Imp. Qs. on Distance Formula68 mins  Coordinate Geometry Important Questions38 mins  Champ Quiz | Coordinate Geometry Problems38 mins  Quiz | Solving Important Questions on Section Formula54 mins  Important Questions of Coordinate Geometry39 mins  Previous Year RMO Questions43 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation view all courses 