Math help!!!?

Posted on 2015-11-17 06:57:00 in Math by WAGH

The question is:

Tarzan is swinging back and forth on a rope swing alternately over land and water. Jane decides to mathematically model his motion and starts a stopwatch. Let y be the number of feet (horizontally) Tarzan is from the riverbank. The river is y=0. Assume y varies sinusoidally with time and that y is positive when tarzan is over land and negative when he is over water. Also assume the swing continues indefinitelyy. Jane finds that when the stop watch reach 5 seconds, Tarzan is at one end of the swing, 32 feet from the river bank over water. Tarzan reaches the other end of his swing 7 seconds later, 25 feet from the river bank over land 





what would this equation look like? 



Where was Tarzen when Jane started the stop watch 



How do you find two positive times for which Tarzen was directly over the river bank? 



How do you tell if Tarzen was over land or water

Update: the is for Precal

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