test - trig things

please remember the common values table.
you better be able to.

for each, simplify the angle into the first quadrant and then evaluate exact answer.

• $\sin (135°)$
• $\tan (240°)$
• $\cos (330°)$
• $\sin (290°)$
• $\cos (240°)$
• $\sin (120°)$
• $\tan (315°)$

graph the equations $f(x)=\cos (x)$ and $g(x)=\frac{\sqrt{3}}{2}$ for $x\in [0,2\pi ]$

• state the x values of the intersections
• solve $\cos (x)>\frac{\sqrt{3}}{2}$

here are some angle questions to stir up your mind

there is an angle $\theta \in [0,2\pi ]$ such that $\tan (\theta )=-\tan (\frac{\pi }{3})$. what can be $\theta$?