Question

If a line makes an angle 45° with positive X-axis, then its slope is

A) 1/√2

B) 1/2

C) √3/2

D) 1

Answer 1

Correct option is (D) 1

If a line makes an angle of \(\theta\) with positive X-axis then its slope is given by \(tan\,\theta.\)

\(\therefore\) Slope of line which makes angle of \(45^\circ\) with positive X-axis is \(m=tan\,45^\circ=1.\)

Answer 2

Correct option is D) 1