SOLUTION: Find all solutions to the equation.
2cos^(2)x+cosx=0
Write answer in radians terms of pi
Example: x=pi/5 +2kpi, k∈ℤ or x= pi/7 +kpi, k∈ℤ
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Question 1120994: Find all solutions to the equation.
2cos^(2)x+cosx=0
Write answer in radians terms of pi
Example: x=pi/5 +2kpi, k∈ℤ or x= pi/7 +kpi, k∈ℤ
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
\ +\ \cos(x)\ =\ 0)
Let )
\ =\ 0)
or
So
\ =\ 0)
or
\ =\ -\frac{1}{2})
Use the unit circle to find all of the angles where \ =\ 0)
or \ =\ -\frac{1}{2})
John
My calculator said it, I believe it, that settles it
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