180°-52°18′36″-25°36″*4
=180°-52°18′36″-100°144″
=180°-52°18′36″-100°2‘24″
=180°-(52°18′36″+100°2‘24″)
=180°-152°20′60″
=180°-152°21′
=179°60'-152°21′
=27°39
180°-52°18′36″-25°36″*4
=180°-52°18′36″-100°144″
=180°-52°18′36″-100°2‘24″
=180°-(52°18′36″+100°2‘24″)
=180°-152°20′60″
=180°-152°21′
=179°60'-152°21′
=27°39