SOLUTION: Solve the equation. 4cos^2(x)-3=0

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Question 1032255: Solve the equation.
4cos^2(x)-3=0
Found 2 solutions by stanbon, ikleyn:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Solve the equation.
4cos^2(x)-3=0
----
cos^2(x) = 3/4
----
cos(x) = sqrt(3)/2
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x = pi/6 or 30 degrees
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Cheers,
Stan H.
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Answer by ikleyn(52803) About Me  (Show Source):
You can put this solution on YOUR website!
.
Solve the equation.
4cos^2(x)-3=0
~~~~~~~~~~~~~~~~~~~~~~~` 

4cos%5E2%28x%29+-+3 = 0  --->

cos%5E2%28x%29 = 3%2F4  --->

cos%28x%29 = +/- sqrt%283%29%2F2,

x = pi%2F6, 5pi%2F6, 7pi%2F6, 11pi%2F6 in the interval [0, 2pi).