Question

Slope of a line which makes an angle ${45}^{\circ }$ with the positive direction of the X-axis is _____.

• A. $\sqrt{2}$
• B. 0
• C. 1
• D. $\sqrt{3}$

Answer 1

The correct option is C 1

Slope of a line which makes an angle $\theta$ with the positive direction of the X-axis is $m=tan\theta$.
$\therefore$Slope of the line which makes an angle ${45}^{\circ }$ with the positive direction of the X-axis is $m=tan{45}^{\circ }$ = 1