化简:(tan10°-√3)·cos10°/sin50°

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/27 14:19:50
化简:(tan10°-√3)·cos10°/sin50°

化简:(tan10°-√3)·cos10°/sin50°
化简:(tan10°-√3)·cos10°/sin50°

化简:(tan10°-√3)·cos10°/sin50°
(tan10°-√3)×cos10°/sin50°
=(sin10°/cos10°-√3)×cos10°/sin50°
=(sin10°-√3cos10°)/sin50°
=2(cos60°sin10°-sin60°cos10°)/sin50°
=2×sin(10°-60°)/sin50°
=-2