Question

What is the angle of inclination of the line x - y + 10 = 0 in degrees?

• A. 45

Answer 1

The correct option is A 45
Equation of the line: x - y + 10
$⟹$ y = x + 10
Compare the line with y = mx + c.
So, m = 1 and c = 10
We know that m = tan θ.
So, tan θ = 1
$⟹$ θ = ${45}^0$