For a planet of radius a, find the area of the surface between the equator and latitude 60 degress north.(adsbygoogle = window.adsbygoogle || []).push({});

This problem was posed to me way back in my calc II class. Instructor (somehow ) used series to solve it, then asked us if we could solve it differently. I only vaguely remember his solution, otherwise I'd post it as well. Anyone have any interesting ways to solve this? Thought it might be fun.

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# Interesting problem about latitude!

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