Question

Find the angle made by the line joining 5,3 and -1,-3 with the positive direction of x-axis​

Answer 1

45°

Explanation:

gradient of the line:

Let A (-1,-3) and B (5,3)

tan a = (yB - yA) / (xB - xA) = (3 - -3) / (5 - -1) = 6/6 = 1

--> the angle made by the line and positive direction of x-axis is:

`a = { \tan}^( - 1) (1) = 45`