sin50'0(1+根号3乘tan10'0 )谢谢了,大神帮忙啊

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sin50'0(1+根号3乘tan10'0 )谢谢了,大神帮忙啊

sin50'0(1+根号3乘tan10'0 )谢谢了,大神帮忙啊
sin50'0(1+根号3乘tan10'0 )谢谢了,大神帮忙啊

sin50'0(1+根号3乘tan10'0 )谢谢了,大神帮忙啊
sin50(1+√3*tan10) = sin50(1 + √3 sin10/cos10) = (sin50/cos10)(cos10 + √3sin10) = 2(sin50/cos10)(sin30cos10 + cos30sin10) = 2(sin50/cos10)sin(30+10) = 2sin50*sin40/cos10 = 2sin50*cos50/cos10 = sin100/cos10 = sin80/cos10 = sin80/sin80 = 1