计算:48°39′+67°41′=______;90°-78°19′40″=______;21°17′×5=______
计算:48°39′+67°41′=______;90°-78°19′40″=______;21°17′×5=______
27.24°=______度______分______秒,108°21′36″=______度.
计算:33°52′+21°54′=______度______分.
计算:48°39′+67°31′-21°17′×5=______.
22.5°=______度______分;12°24′=______度.
计算:33°18′=______°.
计算:153°19′42″+26°40′28″=______.
计算:48°39′+67°31′=______.
(1)39.56°=______°______′______″(2)65°25′12″=______°.
18°______′24°______′32°______′11′______〃19′______〃22′______〃
计算:78°46′14″-36°50′=______.
计算:80°32′15″+90°27′45″=______;100°-36°18′52″=______.