sin780度cos(-330度)tan570度分之tan(-870度)cos1350度sin(-1035度)
展开全部
sin780°cos(-330°)tan570°分之tan(-870°)cos1350°sin(-1035°)
=tan(-870°)cos1350°sin(-1035°)/sin780°cos(-330°)tan570°
=tan870°cos1350°sin1035°/sin780°cos330°tan570°
=tan150°cos270°sin315°/sin60°cos330°tan30°
=-tan30°*0*sin315°/sin60°cos330°tan30°
=0
如果不懂,请追问,祝学习愉快!
=tan(-870°)cos1350°sin(-1035°)/sin780°cos(-330°)tan570°
=tan870°cos1350°sin1035°/sin780°cos330°tan570°
=tan150°cos270°sin315°/sin60°cos330°tan30°
=-tan30°*0*sin315°/sin60°cos330°tan30°
=0
如果不懂,请追问,祝学习愉快!
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询
广告 您可能关注的内容 |