Classwork: Practicing trig function values of special angles

1. Find the exact value of cos-150º

2. Find the exact value of sin315º

3. Find the exact value of cot180º

4. If \cos\theta=\frac{-2}{3} and \cot\theta=3 find \csc\theta

5. If \csc\theta=12 and \sec\theta=8 find \tan\theta

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