Q1 of 112 Page 156

Find the angle of inclination of the straight line whose slope is

(i) 1 (ii) √3 (iii) 0

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°


i) tan θ = 1


⇒ θ = 45°


ii) tan θ = √3


⇒ θ = 60°


iii) tan θ = 0


⇒ θ = 0°


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