[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)[2sin50+sin10(
[2sin50+sin10(1+根号3tan10)]×根号(2sin²80)
[2sin50+sin10(1+根号3tan10)]×根号(2sin²80)
[2sin50+sin10(1+根号3tan10)]×根号(2sin²80)
[2sin50°+sin10°(1+√3tan10°)]•√(2sin²80°)
= [2sin50 + sin10(cos10+√3sin10)/cos10]•√2sin80
= [2sin50cos10+2sin10(cos60cos10+sin60sin10)•√2sin80/cos10
= 2[sin50cos10 + sin10cos(60-10)]•√2
= 2sin(50+10)•√2
= √6