# Answer on Trigonometry Question for Laurel Mallea

Question #9699

solve each equation on the interval [0,2π)

12. sin 3x = -1/2

13. sin 2x + cos x = 0

14. 2 sin^2 x + cos x = 1

15. 2 cos^2 x - 3 cos x +1 = 0

16. cos x = -0.092

17. tan x sec x = 3 tan x

18. tan^2 x - 3 tan x - 2 = 0

12. sin 3x = -1/2

13. sin 2x + cos x = 0

14. 2 sin^2 x + cos x = 1

15. 2 cos^2 x - 3 cos x +1 = 0

16. cos x = -0.092

17. tan x sec x = 3 tan x

18. tan^2 x - 3 tan x - 2 = 0

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