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Hi, this is my Talk page. Thanks. Ylee15 (talk) 15:52, 11 August 2022 (UTC)[reply]

Vincenty formula for great-circle distance

[edit]

In Great-circle distance, the following formula is introduced as a formula that works for *all distances*.

But, it seems not. For example, if we have , we have

Let's say and , then we should have . But, the formula above yields . Ylee15 (talk) 16:11, 11 August 2022 (UTC)[reply]