High school mathematics! Piece of circular functions, seek the range arbitrarily!
高中数学! 任意角的三角函数, 求范围!
互联网
Relate to acute angle circular functions.
关于锐角三角函数.
互联网
Emergency ~! The mathematics, circular functions inscribe high school.
急~! 高中数学, 三角函数题.
互联网
High efficiency unties the method experience that circular functions inscribes in high school mathematics, good Bonus.
高中数学中高效率解三角函数题的方法经验, 好了加分.
互联网