Geometry

Question Analysis  

The question asks which angle corresponds to the unit circle coordinates (1, 0), focusing on identifying axis-aligned angles.  

 

Key Concept Explanation  

Unit Circle Axes: The point (1, 0) lies on the positive x-axis, which corresponds to 0° (or 360°).

 

Step-by-Step Solution  

1. Locate (1, 0) on the unit circle:  

The positive x-axis intersection is at 0°.  

2. Confirm trigonometric values:  

(x-coordinate), (y-coordinate), matching (1, 0).  

 

Option Analysis  

30°: Incorrect (coordinates

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