Question 37
Coordinate GeometryThe line x + y + 4 = 0 makes an angle of θ with the x-axis. Find the value of θ.
- A.315°
- B.225°
- C.135°
- D.45°
Show the answer and explanation
Answer: C (135°)
Explanation
The gradient is −1 = tan θ, and the angle a line makes with the positive x-axis (0° to 180°) is θ = 135°.