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» Online Classroom   »   » Public Discussion of Cel Nav   » Ho minus Hc for Box 6

Author Topic: Ho minus Hc for Box 6
James M

 - posted November 03, 2008 04:57 PM      Profile for James M           Edit/Delete Post 
On page 5-12 of the home study book, bottom of the left hand column, where discussing Step 8, you say: 'If the degrees part of Hc and Ho are not the same, rewrite the larger of the two so that it has the same degrees as the smaller. I don't understand the reasoning behind this. Can you assist?
From: Fort Worth

 - posted November 03, 2008 05:37 PM      Profile for HHEW           Edit/Delete Post 
This is so you can do the arithmetic accurately. For instance, if you had an Hc of 54° 05' and an Ho of 53° 45', it's not readily apparent what the difference (intercept) is. But if you borrow one degree (60') from 54° and make Hc 53° 65' it's easy to see the difference is 20'.

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