1miner2
06-01-2006, 12:10 AM
hello,
my 1st post here.
i need some help with this calculation i found in a 1920's astro book.
i'm unclear on the math.
location is newmarket, england
date wednesday april 17th, 1912.
latitude 52deg north 15 minutes
suns declination is North 10 deg 21 minutes.
the author wants us to find the sun's acentional difference by adding together the logarithms of the tangets of the two measurements 52 deg 15 min and 10 deg 21 min and the sum of the two logs will give us the log.sine of the suns ascensional difference.
he says to add together the 2 log tan of the above figures.
log. tangent 52 deg 15' = 10.11110
+ log. tangent 10 deg 21' = 9. 26159
___________________________________
= log.sine 13 deg 38.5' = 9 . 37268
the above is the mathematics i'm struggling with.
thanks
Edit/Delete Message
my 1st post here.
i need some help with this calculation i found in a 1920's astro book.
i'm unclear on the math.
location is newmarket, england
date wednesday april 17th, 1912.
latitude 52deg north 15 minutes
suns declination is North 10 deg 21 minutes.
the author wants us to find the sun's acentional difference by adding together the logarithms of the tangets of the two measurements 52 deg 15 min and 10 deg 21 min and the sum of the two logs will give us the log.sine of the suns ascensional difference.
he says to add together the 2 log tan of the above figures.
log. tangent 52 deg 15' = 10.11110
+ log. tangent 10 deg 21' = 9. 26159
___________________________________
= log.sine 13 deg 38.5' = 9 . 37268
the above is the mathematics i'm struggling with.
thanks
Edit/Delete Message