Question

Find the angle of the line joining A(4,3) and B(9,7)

Select one:

38.66 degrees

8.66 degrees

3.66 degrees

-38.66 degrees

Answer 1

The ratio of the opposite side to the adjacent side of a right triangle is the tangent.

So the tangent of the angle of the line joining A(4,3) and B(9,7) is equal to 4/5.

tan^-1(4/5) is approximately 38.66 degrees.