Answer to Question #9699 in Trigonometry 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
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