Sidney P. answered • 05/12/21
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Simple algebra: cos2 x + cos x = cos x (cos x + 1) = 0, cos x = 0 or -1, so x = π/2, 3π/2, or π.
Peyton L.
asked • 05/11/21Solve the following equation.
Solve the following equation.
cos^2 x + cos x=0
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