Ok here are the directions on the worksheet that I got from my Pre-Calculus teacher:

Find the exact value of each expression. If it is defined.

1. sin -1 1/2

P.S: I dont know how to type i sub script can someone help me with that?

Printable View

- Nov 29th 2008, 09:58 AMPrattXPre-Calculus Homework help
Ok here are the directions on the worksheet that I got from my Pre-Calculus teacher:

Find the exact value of each expression. If it is defined.

1. sin -1 1/2

P.S: I dont know how to type i sub script can someone help me with that? - Nov 29th 2008, 10:22 AMShyam
- Nov 29th 2008, 10:25 AMPrattX
How di you get that answer?

- Nov 29th 2008, 10:30 AMskeeter
- Nov 29th 2008, 10:42 AMPrattX
ok I'm starting to understand but I thought it would be 210 degrees becuase it's the inverse of sin. I'm still a little confused.

- Nov 29th 2008, 10:46 AMskeeter
inverse sine is only defined in quadrants I and IV

range of the inverse sine function is

- Nov 29th 2008, 10:50 AMPrattX
oh ok..can you just name all the inverses of all the trigonometric funtions so I can write them down for a latter date.

- Nov 29th 2008, 11:00 AMskeeter
research it yourself ...

inverse trig functions - Google Search - Nov 29th 2008, 11:26 AMPrattX
Ok thanks for the help with that but i have another question:

13. sin(sin -11/4) - Nov 29th 2008, 11:29 AMskeeter
1/4

- Nov 29th 2008, 11:32 AMPrattX
how did you get that

- Nov 29th 2008, 11:36 AMskeeter
do some research and find out why.

- Nov 29th 2008, 11:39 AMPrattX
i did some research and I dont understand what I'm reading that's why I asked you.

- Nov 29th 2008, 11:45 AMskeeter
do you understand the concept of an inverse?

a function maps a value x to y

the inverse of that function maps the value y back to x