∠α=36°42″,则它的余角为______.
∵∠α=36°42″,
∴它的余角=90°-36°42″=53°59′18″.
故答案为:53°59′18″.
下列词语中没有错别字的一组是[ ]
A.沙碛 三脚架 心心相印 俗不可奈
B.善后 人来疯 礼仪廉耻 挑肥拣瘦
C.荣膺 拗口令 如雷贯耳 水清无鱼
D.匡骗 挡剑牌 稔为其人 大谬不然
It's a very kind offer, but I really()accept it.
A. mustn't
B. needn't
C. can't
D. don't