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What does "cis" isomer mean in cyclohexane ring?

Answer 1

This holds true, for instance, for ortho (1,2 connections) compounds: trans indicates that one substituent is in the front and one is in the back of carbons 1 and 2, if both are non-hydrogen; if both are in the front or both are in the back, it is cis. It should be noted that this also applies to meta (1,3) and para (1,4) connections.

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Answer 2

Easton Jones

In cyclohexane, the term "cis" refers to isomers where similar substituents are on the same side of the ring, while "trans" refers to isomers where similar substituents are on opposite sides of the ring. These terms are used to describe the spatial arrangement of substituents around the cyclohexane ring.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.