更新1:
makes an angle of 60 degrees with the ground* please solve this problem for me.
A 40 foot ladder leaning against a building makes an angle of 60 with the ground. how far from the base of the is the foot of the ladder.?
回答 (2)
2016-02-22 4:19 am
Cos(angle) = adjacent/hypotenuse
Cos(60°) = x/40
x = 40Cos(60°)
x = 20 feet
Cos(60°) = x/40
x = 40Cos(60°)
x = 20 feet
2016-02-22 4:15 am
20ft
收錄日期: 2021-05-01 16:25:27
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https://hk.answers.yahoo.com/question/index?qid=20160221201420AA9xwhv