posted by Drew on .
Let O represent the origin and P be the point (9, -4). Find the positive angle (counterclock wise direction)that the line segment OP makes with the positive x-axis.
the answer is 5.86 radians but i keep getting 0.418 radian. please help and show work
Isn't your angle in the fourth quadrant?
Your angle in standard position (the corresponding angle if the triangle had been in the first quadrant is inversetan(4/9) which is .418
so your angle in the 4th quadrant is 2pi - .418 = 5.865