Question

Explain the meaning of y=cos^-1x.

Answer 1

the power is -1 corrrect?

Answer 2

Yes, that's correct~

Answer 3

so is that y=inverse of cosx

Answer 4

Yes

Answer 5

yup inverse value of cosx

Answer 6

Oh, is that the answer you think my study guide was looking for? x)

Answer 7

probably XD @jdoe0001 correct me if necessary

Answer 8

Alright, haha, thanks for your help ^_^

Answer 9

hmmm http://www.mathopenref.com/arcsin.html

Answer 10

well.. or http://www.mathopenref.com/arccos.html for that matter

Answer 11

it is the inverse value right?

Answer 12

inverse value = arc (name of function)

Answer 13

well... sadly the notation shows like as if it were a reciprocal

but the inverse trig function returns the ANGLE give the value

Answer 14

given the value that is

Answer 15

so am i wrong?

Answer 16

hmm... well... dunno

so \(\bf cos({\color{olive}{ something}})={\color{brown}{ 0.123456}}\quad so\quad cos^{-1}({\color{brown}{ 0.123456}})={\color{olive}{ something}}\)