# If cosine is equal to -12/13 Find sine and tangent in Quadrant

1. Feb 27, 2008

### Ephratah7

If cosine is equal to -12/13.... Find sine and tangent in Quadrant

If cosine is equal to -12/13.... Find sine and tangent in Quadrant Two.... What is the answer??

2. Feb 27, 2008

### qspeechc

Draw a diagram.

sine = y/r
tangent = y/x
x^2 + y^2 = r^2

Quadrant two means sine>0, and tangent<0.

That should be enough info to solve the problem.

3. Feb 28, 2008

### Ephratah7

.... ok, thanks. but what is ^??

4. Feb 28, 2008

### Ephratah7

^^.... is it "raised to the power of"?

5. Feb 28, 2008

### HallsofIvy

Staff Emeritus
On this and many math boards, if you are just using regular letters, "^" means to the power: 2^3= 8.

Of course, here, you can also use html codes: 2[ sup ]3[ / sup ]= 8, without the spaces, gives 23= 8. Or you can use LaTex: [ tex ]2^3= 8[ /tex ], again without the spaces, gives $$2^3= 8$$. You can see the code used for any LaTex by clicking on it. Also, there is a tutorial for LaTex in the "Homework and Coursework" section.

6. Feb 28, 2008

### Ephratah7

....
i see.. thanks for the info.

"Euclid alone has looked on beauty bare"

^^