SOLUTION: Find all solutions of the equation 2 cos 3x = 1 in the interval [0,pi), with x1<x2<x3.

Question 927958: Find all solutions of the equation 2 cos 3x = 1 in the interval [0,pi), with x1
Answer by brysca(112) (Show Source): You can put this solution on YOUR website!
solution posted below

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hope this helps!
Response to comment:
Since they're asking for a third answer ask again, when does cos(z)=1/2?
cos(z) would equal 1/2 when z equals
Plug into the equation: 3x=z

Since the equation's domain is up to , this is why they ask for the third solution. The next solution for x would be but this is wrong since is greater than . exceeds the domain restrictions.
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