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 Question From Michael: what is 0.366 x cos square (02 degree 17 mins 27 seconds) what is 0.366 x cos square (88 degree 26 mins 45 seconds)

Hi Michael,

One degree is 60 minutes and one second is 60 minutes which is $60 \times 60 = 3600$ degrees. Hence

$0.2 \mbox{ degrees } 17 \mbox{ minutes } 27 \mbox{ seconds } = 0.2 + \frac{17}{60} + \frac{27}{3600} \mbox{ degrees.}$

I hope this helps,
Penny