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【OG20-P154-56题】
In the figure above, what is the ratio of the measure of angle B to the measure of angle A?
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题目:如图所示,∠B与∠A的比是多少
解答: 直角三角形ABC中,∠A+∠B=900,即y+(y+10)=90,得出y=40,因此∠A=500,∠B=400,∠B/∠A=4/5。
题目讨论 (1条评论)

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331637w
Y+Y+10+90=180 y=40 B=40 A=50 B/A = 4/5
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0 回复 2020-11-07 16:04:32