(sin15°cos15°)/(cos^2 165°- sin^2 165°)计算
来源：学生作业帮助网 编辑：六六作业网 时间：2024/11/13 15:21:09
(sin15°cos15°)/(cos^2165°-sin^2165°)计算(sin15°cos15°)/(cos^2165°-sin^2165°)计算(sin15°cos15°)/(cos^2165
(sin15°cos15°)/(cos^2 165°- sin^2 165°)计算
(sin15°cos15°)/(cos^2 165°- sin^2 165°)计算
(sin15°cos15°)/(cos^2 165°- sin^2 165°)计算
(sin15°cos15°)/(cos^2 165°- sin^2 165°)
=(2sin15cos15)/[2(cos2*165)]
=sin30/2cos330
=sin30/2cos(360-30)
=sin30/2cos30
=1/2*tan30
=√3/6
化简sin15°-cos15°/sin15°+cos15°
(sin15°－cos15°)/(sin15°+cos15°)=
sin15°-cos15°/sin15°+cos15°的值?
化简sin15°-cos15°/sin15°+cos15°
sin15°-cos15°/sin15°+cos15°的值?
sin15°cos15°等于
sin15°+cos15°过程
sin15°cos15°等于?
化简：sin15°*cos15°
cos15°-sin15°=?
sin15°cos15°=
sin15°cos15°是什么意思
sin15°+cos15°=
求cos15°-tan15°/cos15°+sin15°
化简（sin15 °+cos15°）2
sin15°=?cos15°=?
求sin15°+cos15°的值
sin15°cos15°怎么算