sin10°cos50°+sin50°cos10°的三角函数值
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sin10°cos50°+sin50°cos10°的三角函数值
sin10°cos50°+sin50°cos10°
=sin(10°+50°)
=sin60°
=根号3/2
=sin(10 + 50) = sin60 = 根号3/2
通过计算数值为
sin10°=0.17364817766693034885171662676931
cos50°=0.64278760968653932632264340990726
sin50°=0.76604444311897803520239265055542
cos10°=0.98480775301220805936674302458952
SO I...
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通过计算数值为
sin10°=0.17364817766693034885171662676931
cos50°=0.64278760968653932632264340990726
sin50°=0.76604444311897803520239265055542
cos10°=0.98480775301220805936674302458952
SO IT IS:
sin10°cos50°+sin50°cos10°=
0.11161889704894966022053988042259+0.75440650673548898654318329032969
=0.86602540378443864676372317075159
公式推导:
sin10=cos80
cos50=sin40
sin50=cos40
cos10=sin80
cos80*sin40+cos40*sin80
=cos(90-10)sin40+cos40(sin90-10)
=sin60°
收起
(sin10°+cos50°)/(cos10°-sin50°)?
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sin10°cos50°+sin50°cos10°的三角函数值
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