Calculate the following integrals. (a) \( \int_{0}^{\pi / 4} 3 \sin ^{2} \theta d \theta \) (b) \( \int_{0}^{\pi / 4} \sin \theta \cos \theta d \theta \) (c) \( \int_{\pi / 12}^{\pi} \sin 4 \theta \sin 2 \theta d \theta \) (d) \( \int \tan \theta d \theta \)
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### (a) \( \int_{0}^{\pi / 4} 3 \sin ^{2} \theta d \theta \) Show more…
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