计算cos(-1860°)=______.
∵cos(-1860°)=cos(-21×90°+30°)=sin30°=12.
故答案为:12.
Five players can a basketball team while a football team eleven players. [ ]
A. be made up of; is consisted of
B. make up; consists of
C. consist of; is made up
D. make up of; consists of
思想道德素质,是客观存在反映到人的意识中经过思维加工产生的观念结果,以及这种结果在长期改造自然、社会实践活动中积淀形成的基本稳定的方向性与规范性精神品质。()