Homework Help: trig

Posted by ahnas on Thursday, June 14, 2012 at 12:59pm.

A pendulum is 18 feet long. Its central angle is 44º. The pendulum makes one back and forth swing every 12 seconds. Each minute, the pendulum swings _____ feet. (Answer to the nearest foot.)

trig - Steve, Thursday, June 14, 2012 at 1:06pm
s = rθ = 18(44*pi/180) = 13.82ft in one arc

It makes 10 (5 back and forth) swings every minute.

Total travel: 138 ft

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