Which mechanism enabled Alhazen (Ibn al-Haytham) to more accurately determine atmospheric refraction's effect on observed star positions?

💡 Explanation

Trigonometry with altitude enabled Alhazen to model refraction because modeling atmospheric bending using known angles created a predictive mathematical framework. Utilizing trigonometry allowed more accurate angular calculations, improved star position estimates under different atmospheric conditions. Therefore, angle-based trigonometry results,rather than specialized duration measurements, achromatic lenses, or mechanical drives which address observational methods.

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