cotangent cotangent functions are ratios of an odd function and and an even function then both the tangent and cota cotangent functions are odd functions (graph is
Nicotine is a potent parasympathomimetic alkaloid found in the nightshade family of plants. It acts as a nicotinic acetylcholine receptor agonist. It is made in the roots and accumulates in the leaves of the plants.
Cotinine is an alkaloid found in tobacco and is also the predominant metabolite of nicotine. The word  cotinine  is an anagram of  nicotine . Cotinine is used as a biomarker for exposure to tobacco smoke. Cotinine is currently being studied as a treatment for depression, PTSD, schizophrenia, Alzheimer's disease and Parkinson's disease.