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April 8

MS Windows calculator: Tanh?

I have the opposite and adjacent lengths and I'm trying to use the 'tan' function on the Windows built-in calculator. How do I do this?

I could probably do it on my calculator from muscle memory (but it's at work). This isn't homework. I'm 28 and got an A in A level Maths before going on to forget everything.

Opp is 15 and Adj is 142. I know that the angle is about 6 (from messing about) but I still want to know how calculate it properly with Windows calculator. --89.241.233.102 (talk) 04:56, 8 April 2013 (UTC)[reply]

It seems you forgot that you need arctan, not tan or tanh. So, entering 15 / 142 = Inv tan should do the trick. — Sebastian 05:20, 8 April 2013 (UTC)[reply]

Thanks. I don't remember ever addressing something called tanh. I knew I wanted the inverse. I didn't realise click Inv gave me those options. Thanks a bunch. <3 89.241.233.102 (talk) 06:41, 8 April 2013 (UTC)[reply]

"tanh" is the hyperbolic tangent. Looie496 (talk) 16:01, 8 April 2013 (UTC)[reply]

... It was on the Further Maths syllabus, but not the ordinary A-level. Dbfirs 07:06, 9 April 2013 (UTC)[reply]