what is arcsin $\theta$ and sinh $\theta$ ?

Question

vishweshshrimali5 · Answer

@mukushla

mathslover · Answer

arc sin theta means :i think it means inverse of sin. However, if you have 1/2=arcsin(theta), where theta is an unknown angle, then the question means "Where is the sin of the angle equal to one half".

mathslover · Answer

theta = arc sin (y/r) http://uk.answers.yahoo.com/question/index?qid=20110529092711AAPJV14

vishweshshrimali5 · Answer

but what is sinh...........

parthkohli · Answer

$\arcsin$ is the inverse function of $\sin$.

anonymous · Answer

sine hyperbolic

parthkohli · Answer

$$\sin 90 = 1 \implies \arcsin 1 = 90 $$

parthkohli · Answer

And yeah, what Omni said.

mathslover · Answer

sin h (z) =gives the hyperbolic sine of z.

vishweshshrimali5 · Answer

Sorry i don't about hyperbolic sine.........

anonymous · Answer

ohh noooo parth.
it must be in radians

mathslover · Answer

http://reference.wolfram.com/mathematica/ref/Sinh.html

parthkohli · Answer

$$\sin{\pi \over 2}=90\implies \arcsin{90} = {\pi \over 2} $$Better?

parthkohli · Answer

sin pi/2 = 1*

parthkohli · Answer

arcsin 1 = pi/2*

parthkohli · Answer

I messed the whole thing, lol.

vishweshshrimali5 · Answer

but any example of sin h

parthkohli · Answer

I'm sure that Omni will be able to give an example.

anonymous · Answer

the function sinhx is defined by:
$$sinhx = \frac{1}{2}  \left(e^{x}-e^{-x}\right)  $$

vishweshshrimali5 · Answer

Ok............
Thats what  I wanted.but why is it called hyperbolic may bet as it has a hyperbolic graph ........ ?

anonymous · Answer

well the graph is here: http://www.wolframalpha.com/input/?i=sinhx i cant remember much about it; it has been a while; sorry.

parthkohli · Answer

Semicolon again? lol.

vishweshshrimali5 · Answer

Np

anonymous · Answer

habit and lazy way to type lol