The three angles of a triangle are in the ratio 3:5:7.Find the largest angle of the triangle.
唔該幫下手~!! thx~!!
MATHS唔識(急用呀~!!)
2007-10-18 2:11 am
回答 (5)
2007-10-18 2:15 am
✔ 最佳答案
1)180*3/(3+5+7) = 36'
180*5/(3+5+7) = 60'
180*7/(3+5+7) = 84'
2007-10-17 18:15:28 補充：
the largest angle = 84'
2007-10-18 3:09 am
The largest angle=180X7/(3+5+7)=84度
2007-10-18 2:20 am
因為一個任何triangle的三隻angles的和是 １８０度．
So,
The largest angle is:
180 x 7/ (3+5+7)
=180 x 7/15
=12 x 7
=84
Therefore, the largest angle is 84 度．
Hence, the 2 large angle :
180 x 5/ (3+5+7)
=180 x 5/15
=12 x 5
=60
Therefore, the 2 large angle is 84 度．
Hence, the smallest angle :
180 -84 -60
=36
Therefore, the smallest angle is 36 度．
Hope i can help u
2007-10-17 18:21:08 補充：
sorry, "Therefore, the 2 large angle is 60 度．"
So,
The largest angle is:
180 x 7/ (3+5+7)
=180 x 7/15
=12 x 7
=84
Therefore, the largest angle is 84 度．
Hence, the 2 large angle :
180 x 5/ (3+5+7)
=180 x 5/15
=12 x 5
=60
Therefore, the 2 large angle is 84 度．
Hence, the smallest angle :
180 -84 -60
=36
Therefore, the smallest angle is 36 度．
Hope i can help u
2007-10-17 18:21:08 補充：
sorry, "Therefore, the 2 large angle is 60 度．"
2007-10-18 2:19 am
係唔係要用英文答架!?
x/y=y份之x
the largest angle of the triangle:
=7/3+5+7*180
=7/15*180
=84
SO the largest angle of the triangle is 84.
你要自己加番d 單位上去喎,因為我打唔到...sorry!
x/y=y份之x
the largest angle of the triangle:
=7/3+5+7*180
=7/15*180
=84
SO the largest angle of the triangle is 84.
你要自己加番d 單位上去喎,因為我打唔到...sorry!
參考: me~
收錄日期: 2021-04-13 13:58:17
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https://hk.answers.yahoo.com/question/index?qid=20071017000051KK02335