Posted by Natalie on Thursday, April 11, 2013 at 2:04pm.
What value(s) of x from 0 to 2pi solve the following equation: cos squared x  cos x  6 = 0

Precalc with Trig  Steve, Thursday, April 11, 2013 at 2:52pm
cos^2  cos  6 = 0
(cos3)(cos+2) = 0
cos = 3 or 2
Bzzzt. cos <= 1, so not possible.
If there's a typo, fix it and apply the same steps.

Precalc with Trig  Natalie, Thursday, April 11, 2013 at 2:57pm
There isn't a typo this is the equation my professor gave us, thanks for the help!
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