# Unit Circle, CAST, Quadrants, Exact Values and Special Triangles (Part 2)

1. 1
a) Find one negative and one positive co-terminal angle with 30°

b) Find the exact value for sin -420°
2. 2
a) Find one negative and one positive co-terminal angle with 150°

b) Find the exact value for tan 840°
3. 3
Find the exact value for:

(sin 30°)(cos 30°)(sin 240°)
4. 4
Find the exact value for:

(tan 30°)(cos 135°)(sin 300°)
5. 5
Find the exact value for:

$sin^2 60°+cos^2 60°$
6. 6
Find the exact value for:

(sin 30°)(cos 45°)+(sin 225°)(cos 330°)
7. 7
Find the exact value for:

(sin 225°)(tan 300°)$-$(tan 150°)(cos 330°)
8. 8
Given $sin\theta=\frac{3}{5}$ and $\angle\theta$ is in quadrant II:

a) Find $cos\theta$

b) Find $tan\theta$

c) Find $\theta$ to the nearest degree.
9. 9
Given $cos \theta=\frac{-5}{13}$ and $\theta$ is in quadrant III:

a) Find $sin \theta$ and $csc\theta$.

b) Find $tan \theta$ and $cot\theta$

c) Find $\theta$ to the nearest degree.
10. 10
Given $cot\theta=-2$ and $\theta$ is in quadrant IV:

a) Find $cos\theta$ and $sec\theta$

b) Find $sin\theta$ and $csc\theta$

c) Find $\theta$ to the nearest degree.

( trigonometry / trig )

$$e=mc^2$$