化简:(tan10°-√3)·cos10°/sin50°

来源:学生作业帮助网 编辑:六六作业网 时间:2024/05/18 16:12:05
化简:(tan10°-√3)·cos10°/sin50°化简:(tan10°-√3)·cos10°/sin50°化简:(tan10°-√3)·cos10°/sin50°(tan10°-√3)×cos1

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