The score of the last question in the senior high school entrance examination is about 25 points, which belongs to the comprehensive investigation topic. There are generally three difficult problems. 1 The score of the short question is about 3~5, the score of the second question is about 10, and the score of the third question is about 8. Generally speaking, it is a question of quadratic trigonometric function and linear combination, and it is not easy to get full marks, but the score of the first question is relatively simple and easy to get, and the third question is generally comprehensive and the calculation process is complicated.