Solve the equation of Cos3(theta) = 1/2 , for theta is an element of real numbers, where (theta) is in radius. I feel like it's simple but I don't know how :-/
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degrees degrees where k is any integer.
Last edited by Goku; Jun 10th 2012 at 10:58 AM.
Originally Posted by DeeRose Solve the equation of Cos3(theta) = 1/2 , for theta is an element of real numbers, where (theta) is in radius. Is this supposed to be or If the latter, are you looking for an exact solution?
Originally Posted by Goku degrees Your procedure is good, but this is only one of infinitely many solutions.
It's Cos3(theta) ..Not Cos^3(theta) Is Goku's response the right one then?
Last edited by DeeRose; Jun 10th 2012 at 11:29 AM.
Originally Posted by DeeRose It's Cos3(theta) .. Is Goku's response the right one then? Note that cosine is equal to for any angle that is coterminal with or . Thus where .
Thanks alot! :-)
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