将下列三角函数转化为锐角三角函数 特别急!急啊!sin623°42`= sin(-3π/5)= tan3π/5 cos(-11π/9)= cos(-104°26`)= tan17π/6
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/21 11:43:24
![将下列三角函数转化为锐角三角函数 特别急!急啊!sin623°42`= sin(-3π/5)= tan3π/5 cos(-11π/9)= cos(-104°26`)= tan17π/6](/uploads/image/z/10305002-2-2.jpg?t=%E5%B0%86%E4%B8%8B%E5%88%97%E4%B8%89%E8%A7%92%E5%87%BD%E6%95%B0%E8%BD%AC%E5%8C%96%E4%B8%BA%E9%94%90%E8%A7%92%E4%B8%89%E8%A7%92%E5%87%BD%E6%95%B0+%E7%89%B9%E5%88%AB%E6%80%A5%21%E6%80%A5%E5%95%8A%21sin623%C2%B042%60%3D++++++++++++++++++++++sin%28-3%CF%80%2F5%29%3D++++++++++++++++++++++++tan3%CF%80%2F5++++++++++++++++++++++cos%28-11%CF%80%2F9%29%3D++++cos%28-104%C2%B026%60%29%3D+++++++++++++++++++++++++++++++++++++tan17%CF%80%2F6)
将下列三角函数转化为锐角三角函数 特别急!急啊!sin623°42`= sin(-3π/5)= tan3π/5 cos(-11π/9)= cos(-104°26`)= tan17π/6
将下列三角函数转化为锐角三角函数 特别急!急啊!
sin623°42`= sin(-3π/5)= tan3π/5 cos(-11π/9)=
cos(-104°26`)= tan17π/6
将下列三角函数转化为锐角三角函数 特别急!急啊!sin623°42`= sin(-3π/5)= tan3π/5 cos(-11π/9)= cos(-104°26`)= tan17π/6
sin623°42`= -sin83°42`
sin(-3π/5)= -sin72°
tan3π/5=-tan72°
cos(-11π/9)=-cos40°
cos(-104°26`)= -cos14°26`
tan17π/6=-tan30°