题目

已知角的顶点与坐标原点重合，始边与x轴的非负半轴重合，若点在角的终边上，则_________． 答案：【答案】【解析】根据三角函数的定义求得，由此求得.三角函数的定义可知，所以．故答案为：—This apple pie is too sweet, don’t you think so? —_____. I think it’s just right, actually. A．Not reallyB．I hope soC．Sounds goodD．No wonder