how to find the measure of an arc without the central angle or arc angle?
2013-05-24 2:03 am
is there like a formula in doing it?? please help me, i have an example here: http://s1284.photobucket.com/user/kloverforever1/media/ScreenShot2013-05-23at85153PM_zps04aa1dac.png.html (We need to find the measure of arc AB, and i need to do like 6 of those, please help, id be very grateful
回答 (1)
2013-05-24 2:33 am
✔ 最佳答案
Measure of arc AB = 2arcsin(15/17) = 123.855 degrees 
2013-05-24 9:12 am
AOB = arcsin (15/17) = 61.93
Central angle = 123.86 = 2.162 radians
Radius = 17
Arc AB = 2.162*17 = 36.75
Central angle = 123.86 = 2.162 radians
Radius = 17
Arc AB = 2.162*17 = 36.75
收錄日期: 2021-05-01 14:48:28
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20130523180307AAKIFxU