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**anonimnystefy****Real Member**- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,015

hi all

before i post about the trig functions i would just like to notice that this thread doesn't have a sticky.

now for the trig functions:

First there are some well-known trig functions:

sin

cos

tan(tg)

cot(ctg)

and their inverse functions:

arcsin

arccos

arctan(arctg)

arccot(arcctg)

Then there are some less known:

sec

cosec(csc)

arcsec

arccosec(arccsc)

And there are the least known ones like:

versin(vers,ver)

vercosin

coversin(cvs)

covercosine

haversin

havercosin

hacoversin

hacovercosine(the trig function with the longest name)

exsec

excsc(excosec)

crd(with full name of chord)

Wiki link:http://en.wikipedia.org/wiki/List_of_tr … identities

EDIT:What i forgot to mention are the hyperbolic functions:

sinh,

cosh,

tanh,

coth,

sh,

csch.

*Last edited by anonimnystefy (2011-06-27 06:11:04)*

Here lies the reader who will never open this book. He is forever dead.

Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment

The knowledge of some things as a function of age is a delta function.

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**anonimnystefy****Real Member**- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,015

hi GgiPunjab

welcome to the forum!

arccos(x) is the inverse function of sin(x) funtion

Here lies the reader who will never open this book. He is forever dead.

Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment

The knowledge of some things as a function of age is a delta function.

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**ShivamS****Member**- Registered: 2011-02-07
- Posts: 3,648

anoni, who are you talking to?

Oh wait, maybe they deleted their post.

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**anonimnystefy****Real Member**- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,015

yes,yes they did.

Here lies the reader who will never open this book. He is forever dead.

Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment

The knowledge of some things as a function of age is a delta function.

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**ShivamS****Member**- Registered: 2011-02-07
- Posts: 3,648

anonimnystefy, how is arccos the inverse of arcsin?

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**anonimnystefy****Real Member**- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,015

no it isn't arccos(x) is inverse of cos(x).i'm sorry.

Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment

The knowledge of some things as a function of age is a delta function.

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**Maiya****Member**- Registered: 2011-08-11
- Posts: 124

are they all really their inverses....

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