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6-89.
Solve for x on the indicated domain. Homework Help ✎
cos x = 0, [0, 2π]
2 sin x +
= 0, [0, 2π]cos x(2 sin x +
) = 0, [0, 2π]cos x(2 sin x +
) = 0
Use the Zero Product Property. Then combine parts (a) and (b).
Solve for all solutions.
Add a 2πn to each solution in [0,2π] where n is any integer.