计算 (24 9:29:7)计算1）180°-（75°40'23"+31°35'49"）；2）24°14'24"+55.

1）180°-(75°40'23"+31°35'49")
=180°-(106°75'72")
=180°-(106°76'12")
=180°-(107°16'12")
=72°43'48"
=72°(43+48/60)'
=72°43.8'
=(72+43.8/60)°
=72.73°
2）24°14'24"+55.48°
=24°14'24"+55°(0.48*60)'
=24°14'24"+55°28.8'
=24°14'24"+55°28'(0.8*60)"
=24°14'24"+55°28'48"
=79°42'72"
=79°43'12"
=79°(43+12/60)'
=79°43.2'
=(79+43.2/60)°
=79.72°
3）123°24'-60°36'42"
=62°47'18"
=62°(47+18/60)'
=62°47.3'
=(62+47.3/60)°
=62.78833°

1）180°-（75°40'23"+31°35'49"）
=180°-107°16'12"
=72°43'48"
2）24°14'24"+55.48°
=24°14'24"+55°28’48"
=79°43’12"
3）123°24'-60°36'42"
=62°47'18"