1. Practice Evaluate each of the following.
1) cos (150 ○) 2) sin (360 ○) 3)
4) ) )
7) tan(240○) ) csc(-225○)
9) cot(20π/3) ) sec(- π/4)

2. Solving
Trig Equations

3. Determine all of the solutions 0 < x < 2π
NON-Calculator
Determine all of the solutions 0 < x < 2π
2cos x – 1 = 0

4. Determine all of the solutions 0 < x < 2π
NON-Calculator
Determine all of the solutions 0 < x < 2π

5. Determine all of the solutions 0 < x < 2π
NON-Calculator
Determine all of the solutions 0 < x < 2π
3tan2x = 1

6. Determine all of the solutions 0 < x < 2π
NON-Calculator
Determine all of the solutions 0 < x < 2π
2cos2x – cosx – 1 = 0

7. CALCULATOR ACTIVE Determine all of the solutions 0°< x < 360°
cosx = 0.7
3sinx = 9
sinx = -2/5

8. Calculator Solve algebraically for all solutions [0º, 360º)
Confirm your solutions graphically.