(Solved): Set up an integral for the length of the curve. \( x=6 \tan y, 0 \leq y \leq \frac{\pi}{4} \) \( \i ...

Set up an integral for the length of the curve. \( x=6 \tan y, 0 \leq y \leq \frac{\pi}{4} \) \( \int_{0}^{\pi / 4} \sqrt{1-36 \sec ^{2} y} d y \) \( \int_{0}^{\pi / 4} \sqrt{1+6 \sec ^{4} y} d y \) \( \int_{0}^{\pi / 4} \sqrt{1+36 \sec ^{2} y} d y \) \( \int_{0}^{\pi / 4} \sqrt{1+36 \sec ^{4} y} d y \)