# Math problem help

1. Mar 13, 2004

### mathzeroh

math problem help!!

hello everybody, how's it going? well, i had a problem with this math homework that i am tearing my hair out about it!!

here is my problem:

the directions for this problem says this:

Find each value. Express theta (i don't know how to make that greek letter of theta on here, it is a cirlce with a

line in the middle of it i hope you get what i mean )
in radians to the nearest hundredth.
5. Arctan of the square root of 6 (I don't know how to make the arctan and the square root symbols on here sorry

for writing it all out ).

this is what i did, i just took my TI-83 (it's not a TI-83 Plus, just a regular one) and i just put it in there. i got this answer,

approximately 67.79

i thought that i was done, but when i looked in the back of the book to see if i got number five (this problem) right, i

didn't get it right!! they had this answer in the back: 1.18

how on earth did they get that??

2. Mar 13, 2004

3. Mar 13, 2004

### mathzeroh

wut do you mean? not i don't remember sorry bro.

btw is it 30 degrees in a radian?[?]

Last edited: Mar 13, 2004
4. Mar 13, 2004

### HallsofIvy

Staff Emeritus
1. Homework should be posted the "homework zone" (I'm "mentor" for the homework zone so I'm kinda hardnosed about that. It's a jurisdictional thing!).

2. Put your calculator in "radian" mode!!! There is a button on your TI-83 that says "mode". Press that and you find a menu including one for angles that probably says "degrees" now. move down to that and select "radians".

3. You can make a &theta; by typing "& theta ;" without the spaces (and without the "!). I wouldn't use a special arctan symbol. for arctan(sqrt(6)) (which is a perfectly valid way of writing it) I would use "arctan(&radic;(6))" and I got the &radic; by typing "& radic ;"-again without the spaces. If you really want to use tan-1(&radic;(6)) just type "tan[ sup /]-1[ /sup ](& radic ;(6)) without the spaces.
If you want to be really fancy you can use "tex":
$$\theta= tan^{-1}(\sqrt{6})$$.

Just click on that to see the "code".

Last edited: Mar 13, 2004
5. Mar 13, 2004

### mathzeroh

bro thank you sooooo much!! you don't now wut this means to me!!

i'm really really sorry about the misplacement of this thread! thank you for your patience and the help!

i was in a hurry and so this is why i put it in the "general math" section. if its possible, can you move it to the right section?

THANK YOU AGAIN!!