Evaluate the integral $\int 2\cos^2 \theta d\theta$.
University of Ilorin MTH102 2025B past question
- $\frac{\sin 2\theta}{2} + \theta + C$
- $\frac{\cos 2\theta}{2} + \theta + C$
- $\sin 2\theta + \theta + C$
- $\cos 2\theta - \theta + C$
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