# Trigonometry Classwork 5-23-17

In 1-9, solve each equation for $x$ such that $0\leq x<2\pi$.

1. $2\sin(3x)+1=0$
2. $2\cos(2x)+1=0$
3. $\sec(4x)-2=0$
4. $\sqrt{3}\tan(3x)+1=0$
5. $2\cos(3x)=1$
6. $2\sin{x}\tan{x}-\tan{x}=1-2\sin{x}$
7. $\sec{x}\tan{x}-\cos{x}\cot{x}=\sin{x}$
8. $\tan{x}-3\cot{x}=0$
9. $\tan(3x)+1=\sec(3x)$
10. Solve for $x$ such that $0\leq x<2\pi$ and round to the nearest thousandth: $\cos{x}=0.4$