63°58′46″-12°32′44″X3+11°23′24″÷3

问题描述:

63°58′46″-12°32′44″X3+11°23′24″÷3

63°58′46″-12°32′44″X3+11°23′24″÷3
=63°+58′+46″-(36°+96'+132'')+(9°+141’+144‘’)÷3
=63°+58′+46″-36°-96'-132''+3°+47’+48‘’
=30°+9’-2‘’
=30°+8‘+58’‘
= 30°8‘58’‘