The altitude of Polaris, as measured by an observer in Reno, Nevada, is closest to

To determine the altitude of Polaris as seen from Reno, Nevada, we must consider the geographical latitude of Reno and the celestial mechanics involved with the position of Polaris.

1. Break Down the Problem

   • Identify the latitude of Reno, Nevada.
   • Understand how the altitude of Polaris is related to the observer's latitude.

2. Relevant Concepts

   • The altitude of Polaris in the sky is approximately equal to the observer's latitude in the Northern Hemisphere. This is because Polaris is located nearly directly above the North Pole.

3. Analysis and Detail

   • The latitude of Reno, Nevada, is approximately 39.5° North.
   • Since Polaris is located at the celestial north pole, the altitude of Polaris can be determined using: $\text{Altitude of Polaris} \approx \text{Latitude of observer}$
   • Therefore, the altitude of Polaris from Reno would be about 39.5°.

4. Verify and Summarize

   • This method is consistent as many geographical and astronomical references confirm that the altitude of Polaris matches the observer's northern latitude. No additional verification is needed since there is a strong correlation established by celestial navigation.

Final Answer

The altitude of Polaris as measured by an observer in Reno, Nevada, is approximately 39.5°.