Question: In Exercises 1-4, use the half-angle formulas to determine the exact values of the sine, cosine, and tangent of the angle. 1. 75 2. 165

In Exercises 1-4, use the half-angle formulas to determine the exact values of the sine, cosine, and tangent of the angle.
1. 75°
2. 165°
3. 112° 30o
4. 67° 330o

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