Question

Find the difference:

60° 50' 40"

-30° 40' 50"

Answer 1

30 deg 9 sec 50 min

Explanation:

First borrow 1 degree (equivalent to 60 seconds) from the 50', obtaining:

60 deg 49 sec 100 min

-30 deg 40 sec 50 min

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30 deg 9 sec 50 min