hello I'm a 6th grade student who jumped math to 9th grade. I noticed we are gonna learn about trigonometry and precalculus, and I just got curious, can anyone briefly explain what sinh, cosh, tanh are? i know what sin, cos, tan are but what does the 'h' do to them?

 Sep 7, 2017

The  ' h ' stands for ' hyperbolic'  .   The hyperbolic functions  sinh cosh tanh    are a completely different family of functions from sin cos tan  ( which are known as circular functions.)       Depending on how far you take maths,you may meet the hyperbolic functions later.  But first,get properly acquainted with the circular functions. That's fundamental if you are going to progress in calculus.

 Sep 7, 2017

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