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Re: Calculate star rise or set time?
From: Samuel L
Date: 2015 Nov 24, 07:11 -0800

Frank,

Success! Thank you so much.

My calculator has that natural text book entry so here's how it's entered;

Cos^-1(-tan(30)tan(40)

That is; inverse cosine key (minus sign tan(30)tan(40) = 118.976

Perfect.

Thanks,

Sam L.

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