cosine
"cosin" means "cosine" in Welsh (masculine noun). Mutation forms: Treiglad Meddal → gosin, Treiglad Trwynol → nghosin, Treiglad Llaes → chosin.
In Welsh, the first letter of "cosin" changes depending on the grammatical context. These are the mutated forms:
| Mutation | Form |
|---|---|
| Base form | cosin |
| Treiglad Meddal | gosin |
| Treiglad Trwynol | nghosin |
| Treiglad Llaes | chosin |
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