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Step 1I'll solve this step-by-step using precise LaTeX formatting:
Step 2: Recall the unit circle coordinates for 60∘
• It corresponds to $$rac{\pi}{3}$$ radians
• 60∘ is a special angle in the unit circle • The cosine of this angle has a standard value
Final Answer
Key Insight: For special angles like 30∘, 45∘, 60∘, and 90∘, it's helpful to memorize their standard trigonometric values in the unit circle.
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