[2sin50°+sin10°(1+√3tan10°)]*√2(sin80°)*(sin80度)

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/29 08:34:26
[2sin50°+sin10°(1+√3tan10°)]*√2(sin80°)*(sin80度)
x)6*358AH{: u2.I;c|#PPHSKzkMR>  U3M+9j*6nW>T\!SP} 4A &9M̽0}@)n}F@nyTF 14lzzzBi늗+ntOhlʶ[#s

[2sin50°+sin10°(1+√3tan10°)]*√2(sin80°)*(sin80度)
[2sin50°+sin10°(1+√3tan10°)]*√2(sin80°)*(sin80度)

[2sin50°+sin10°(1+√3tan10°)]*√2(sin80°)*(sin80度)
[2sin50°+sin10°(1+√3tan10°)]*√2(sin80°)*(sin80度)
=[2sin50°*sin80°+sin10°*cos10°(cos10°+√3sin10°)/cos10°]*√2(sin80°)
=[2sin50°*sin80°+2sin10°(1/2cos10°+√3/2sin10°)]*√2(sin80°)
=[2sin50°*sin80°+2sin10°sin(30°+10°)]*√2(sin80°)
=[2sin50°*sin80°+2sin10°sin40°]*√2(sin80°)
=[2sin50°*cos10°+2sin10°cos50°]*√2(sin80°)
=2[sin60°]*√2(sin80°)
=√6sin80°

[2sin50°+sin10°(1+√3tan10°)]*√2(sin80°)*(sin80度)
=[2sin50°*sin80°+sin10°*cos10°(cos10°+√3sin10°)/cos10°]*√2(sin80°)
=[2sin50°*sin80°+2sin10°(1/2cos10°+√3/2sin10°)]*√2(sin80°)
=[2sin50°*sin...

全部展开

[2sin50°+sin10°(1+√3tan10°)]*√2(sin80°)*(sin80度)
=[2sin50°*sin80°+sin10°*cos10°(cos10°+√3sin10°)/cos10°]*√2(sin80°)
=[2sin50°*sin80°+2sin10°(1/2cos10°+√3/2sin10°)]*√2(sin80°)
=[2sin50°*sin80°+2sin10°sin(30°+10°)]*√2(sin80°)
=[2sin50°*sin80°+2sin10°sin40°]*√2(sin80°)
=[2sin50°*cos10°+2sin10°cos50°]*√2(sin80°)
=2[sin60°]*√2(sin80°)
=√6sin80°

收起