Convert the point $( 1, -1, -6 )$ in rectangular coordinates to cylindrical coordinates.  Enter your answer in the form $(r,\theta,z),$ where $r > 0$ and $0 \le \theta < 2 \pi.$
Question:
Convert the point $( 1, -1, -6 )$ in rectangular coordinates to cylindrical coordinates.  Enter your answer in the form $(r,\theta,z),$ where $r > 0$ and $0 \le \theta < 2 \pi.$
Answer:
Let's think step by step.

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\left( \sqrt{2}, \frac{7 \pi}{4}, -6 \right)
Convert the point $( 1, -1, -6 )$ in rectangular coordinates to cylindrical coordinates.  Enter your answer in the form $(r,\theta,z),$ where $r > 0$ and $0 \le \theta < 2 \pi.$
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