Question

Find the angle of inclination of the straight line whose slope is $1\sqrt{3}$

• A. 30°
• B. 60°
• C. 45°
• D. 1/√3

Answer 1

The correct option is A

30°

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

$\Rightarrow$ m = tan θ

$\Rightarrow$ $1\sqrt{3}$= tan θ

$\Rightarrow$ θ = ${30}^{\circ }$