Geometry

Question Analysis  

Find the y-coordinate of a unit circle point in Quadrant I with , leveraging 30-60-90 triangle ratios or the Pythagorean theorem.  

 

Key Concept Explanation  

Unit Circle Equation: For any point on the unit circle, .  

30-60-90 Triangles: In Quadrant I, corresponds to , where .  

 

Step-by-Step Solution  

1. Apply the unit circle equation:  

.  

2. Calculate :  

.  

3. Solve for :  

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