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与201 1年高考数学江西卷理科第17题一样,2012年高考数学江西卷理科第17题仍是一道常规三角题,考查考生运用三角函数解三角形的能力。我们首先把这两年的试题进行简单的分析比较。2011年高考数学江西卷理科第17题:在△ABC中,角A,B,C的对边分别是a,b,c,已知sinC+cosC=1-sin C/2。(1)求sinC的值;
As with the 17th issue of the 2011 Mathematics Entrance Examination in Jiangxi Province, the 17th issue of the Entrance Examination Mathematics Jiangxi Curriculum in 2012 is still a regular triangular question and examines candidates’ ability to solve trigonometry using trigonometric functions. First, we will conduct a simple analysis and comparison of the two years’ questions. 2011 college entrance examination Jiangxi Science Section 17 Question: In ABC, the opposite sides of the angles A, B and C are respectively a, b and c, and sinC + cosC = 1-sin C / 2 is known. (1) find the value of sinC;