关于“三角函数的诱导公式”的教材和教学比较

关于“三角函数的诱导公式”的教材和教学比较

SHU XUE JIAO XUE ›› 2012, Vol. 1 ›› Issue (6) : 6-9.

SHU XUE JIAO XUE ›› 2012, Vol. 1 ›› Issue (6) : 6-9.

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