求【2sin50度+sin10度(1+根号3tan10度)】sin80度的值
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求【2sin50度+sin10度(1+根号3tan10度)】sin80度的值
![求【2sin50度+sin10度(1+根号3tan10度)】sin80度的值](/uploads/image/z/11806778-2-8.jpg?t=%E6%B1%82%E3%80%902sin50%E5%BA%A6%2Bsin10%E5%BA%A6%EF%BC%881%2B%E6%A0%B9%E5%8F%B73tan10%E5%BA%A6%EF%BC%89%E3%80%91sin80%E5%BA%A6%E7%9A%84%E5%80%BC)
【2sin50°+sin10°(1+根号3tan10°)】sin80°
=【2sin50°+sin10°(1+tan60°tan10°)】sin80°
=【2sin50°+sin10°(1+sin60°sin10°/cos60°cos10°)】sin80°
=【2sin50°+sin10°((cos60°cos10°+sin60°sin10°)/cos60°cos10°)】sin80°
=【2sin50°+sin10°((cos50°)/cos60°cos10°)】sin80°
=【2sin50°+2sin10°cos50°/cos10°】sin80°
=【(2sin50°cos10°+2sin10°cos50°)/cos10°】sin80°
=[2sin60°/cos10°]sin80°
=√3sin80°/cos10°
=√3sin80°/sin80°
=√3
=【2sin50°+sin10°(1+tan60°tan10°)】sin80°
=【2sin50°+sin10°(1+sin60°sin10°/cos60°cos10°)】sin80°
=【2sin50°+sin10°((cos60°cos10°+sin60°sin10°)/cos60°cos10°)】sin80°
=【2sin50°+sin10°((cos50°)/cos60°cos10°)】sin80°
=【2sin50°+2sin10°cos50°/cos10°】sin80°
=【(2sin50°cos10°+2sin10°cos50°)/cos10°】sin80°
=[2sin60°/cos10°]sin80°
=√3sin80°/cos10°
=√3sin80°/sin80°
=√3
求【2sin50度+sin10度(1+根号3tan10度)】sin80度的值
求[2sin50度+sin10度(1+根号3*tan10度)]*根号下2倍sin80度的平方 的值
[2sin50°+sin10°(1+√3tan10°)]*√2(sin80°)*(sin80度)
[2sin50+sin10(1+根号3tan10)]sin80
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化简【2sin50°+sin10°(1+根号3tan10°)】乘根号下2(sin80°的平方)
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求值:[2sin50°+sin10°(1+√3tan10°)]×√2sin80°
求值[2sin50°+sin10°(1+√3tan10°)]*√2(sin80°)*(sin80°)
化简[2sin50°+sin10°(1+根号三tan10°)]*根号[2(sin80°)平方]拜托了各位
请问这个题怎么解?sin50°+sin10°(1+根号3*tan10°)根号下2*sin80°平方
化简sin50度[1+(根号3)tan10度] 第一步=sin50(cos10+√3sin10)/cos10 第二步是