To find Earth's equatorial rotation speed, we should divide the circumference of Earth by a 24 hours (1 day). To find the rotation speed at any other latitude, you need the following fact: The radial distance from Earth's axis at any latitude is equal to the equatorial radius times the cosine of the latitude. (Hint: When using the cosine (cos) function, be sure your calculator is set to recognize angles in degree mode, not in radian or gradient mode.) The radius of Earth is 6380 kilometers. Vi = 1370 km/hr Find the rotation speed for a person at latitude 35°N.

The  value  is  

Explanation:

From the question we are told that  

   The  radius of the Earth is  

   The  latitude is  

Generally the Earth's equatorial rotation speed is mathematically represented as

Here  C is the circumference which is mathematically represented as

=>          

=>          

           t is the time which is mathematically represented as

           t =  24 h

So

=>          

Generally the rotation speed for a person at latitude 35°N. is mathematically represented as

=>      

=>

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