Find the measure of the positive angle that a straight line makes with the positive direction of the -axis approximated to the nearest second,
given that the slope of the straight line is 0.492.
The slope, , of a straight line is equal to the tangent of the positive angle, , that the line makes with the positive direction
For our line, the slope is 0.492. So, we can say
Using the calculator gives
So, to the nearest second