【2sin50°+sin10°(1+根号3tan10°】*根号2sin²80°=
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【2sin50°+sin10°(1+根号3tan10°】*根号2sin²80°=
![【2sin50°+sin10°(1+根号3tan10°】*根号2sin²80°=](/uploads/image/z/7813854-54-4.jpg?t=%E3%80%902sin50%C2%B0%2Bsin10%C2%B0%281%2B%E6%A0%B9%E5%8F%B73tan10%C2%B0%E3%80%91%2A%E6%A0%B9%E5%8F%B72sin%26sup2%3B80%C2%B0%3D)
1+根号3tan10°
=(cos10°+根号3sin10°)/cos10°
=2(1/2×cos10°+1/2×根号3sin10°)/cos10°
=2(cos60°cos10°+sin60°sin10°)/cos10°
=2cos50°/cos10°
根号2sin²80°------------------做了好久,这个sin²80°在根号里面的,才做出来
=根号2cos²10°
=根号2cos10°
【2sin50°+sin10°(1+根号3tan10°】*根号2sin²80°
=【2sin50°+2sin10°cos50°/cos10°】*根号2cos10°
=2根号2(cos10°sin50°+sin10°cos50°)
=2根号2sin60°
=2根号2×1/2根号3
=根号6
=(cos10°+根号3sin10°)/cos10°
=2(1/2×cos10°+1/2×根号3sin10°)/cos10°
=2(cos60°cos10°+sin60°sin10°)/cos10°
=2cos50°/cos10°
根号2sin²80°------------------做了好久,这个sin²80°在根号里面的,才做出来
=根号2cos²10°
=根号2cos10°
【2sin50°+sin10°(1+根号3tan10°】*根号2sin²80°
=【2sin50°+2sin10°cos50°/cos10°】*根号2cos10°
=2根号2(cos10°sin50°+sin10°cos50°)
=2根号2sin60°
=2根号2×1/2根号3
=根号6
【2sin50°+sin10°(1+根号3tan10°】*根号2sin²80°=
化简:[2sin50°+sin10°(1+根号3*tan10°)]*根号sin^280°
[2sin50°+sin10°(1+根号3 tan10°)]根号(2sin^2 80°)的值
[2sin50°+sin10°(1+根号3tan10°)]乘sin10°等于?
一道高一计算题,化简[2sin50°+sin10°(1+根3 *tan10°)]*根2sin〃80°(第二个根号下是一个
[2sin50°+sin10°(1+√3tan10°)]•√(sin²80°)
化简【2sin50°+sin10°(1+根号3tan10°)】乘根号下2(sin80°的平方)
化简{2sin50°+sin10°【1+(根号3tan10°)】根号(1加cos20)°
请问这个题怎么解?sin50°+sin10°(1+根号3*tan10°)根号下2*sin80°平方
2sin50°(1+根号3tan10°)=?
化简(2sin50+sin10(1+根号3tan10))根号(2sin^280)
[2sin50+sin10(1+根号3*tan10) ]根号(sin^280)