how to find the measure of an arc without the central angle or arc angle?

👨🏻‍🏫 學術台數學

[匿名]

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)

[匿名]

2013-05-24 2:33 am

✔ 最佳答案

Measure of arc AB = 2arcsin(15/17) = 123.855 degrees

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用戶57799

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

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