SOLUTION: consider the following equation 2cos(theta)cos(theta) + theta = 0 find all solutions in the interval [0, 2pi]

Question 300722: consider the following equation
2cos(theta)cos(theta) + theta = 0 find all solutions in the interval [0, 2pi]
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
There is no solution.
cos(theta) starts at 1 when theta=0.
The square term then will always be greater than or equal to zero in the interval.
The theta term will vary between [0, 2pi].
Hence the sum will never equal zero.

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