Determine a general formula (or formulas) for the solution to the equation.2 cos ? - 1 = 0

A. ? =  + 2n? or ? =  + 2n?
B. ? =  + 2n? or ? =  + 2n?
C. ? =  + n? or ? =  + n?
D. ? =  + n? or ? =  + n?

Answer: B

Mathematics

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A.
B.
C.
D.

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