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On the slope of a straight line If the slope of a straight line is less than - 1, why is the range of inclination angle not 90 to 135? Is it 90 to 135 or 135 to 180? The college entrance examination will be held tomorrow
It is 90 to 135 (π / 2,5 π / 4) 1. Draw the image of TaNx, you can know that it is 90 to 135 degrees 2. You can also see in the rectangular coordinate system, if you know the origin of a certain point, - 1 slope of the line is the angle bisector of quadrant 2.4, less than - 1, that is, y is greater than x, that is, between the angle bisector of quadrant 2.4 and the Y axis
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