Quadrants for an angle
Move the point and analyze the quadrants for the angles. Then, answer the questions below.
The angles in Quadrant I are:
[math]0^{\circ}\le\alpha\le180^{\circ}[/math]
[math]0^{\circ}<\alpha<90^{\circ}[/math]
[math]\alpha\le90^{\circ}[/math]
[math]0^{\circ}\le\alpha\le90^{\circ}[/math]
The angles in Quadrant II are:
[math]\alpha<180^{\circ}[/math]
[math]90^{\circ}<\alpha<180^{\circ}[/math]
[math]0^{\circ}\le\alpha\le180^{\circ}[/math]
[math]90^{\circ}\le\alpha\le180^{\circ}[/math]
The angles in Quadrant III are:
[math]180^{\circ}<\alpha<270^{\circ}[/math]
[math]180^{\circ}\le\alpha\le360^{\circ}[/math]
[math]\alpha\ge180^{\circ}[/math]
[math]90^{\circ}<\alpha<270^{\circ}[/math]
The angles in Quadrant IV are:
[math]270^{\circ}<\alpha<360^{\circ}[/math]
[math]180^{\circ}\le\alpha\le360^{\circ}[/math]
[math]\alpha\le360^{\circ}[/math]
[math]\alpha>270^{\circ}[/math]
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Information: Quadrants for an angle