一题多法,指一道习题可以有多种解法。有时选择适当的题目,进行数学课外活动,对培养学生的数学思维能力和解题能力是有好处的。现以一道三角题来说明,题目是: The multi-method of one question means that there are many solutions to a problem. Sometimes selecting appropriate topics and performing extra-curricular activities outside mathematics are beneficial to students’ ability to think and solve problems. Now with a trigonometric question to illustrate, the topic is: