Question
Mathematics Question on Equation of a Line in Space
The inclination of the line x - y + 3 = 0 with the positive direction of x-axis is
A
45∘
B
135∘
C
−45∘
D
−135∘
Answer
45∘
Explanation
Solution
The equation of the line x - y + 3 = 0 can be rewritten as y = x + 3 ⇒ m = tan θ = 1 and hence θ=45∘.