Here's the question you clicked on:

## anastar46 Group Title tan 5pi/4 one year ago one year ago

• This Question is Closed
1. Luigi0210 Group Title

Welcome to openstudy :)

2. Luigi0210 Group Title

D you know your unit circle/triangles?

3. Luigi0210 Group Title

*Do

4. anastar46 Group Title

I know my unit circle I'm just having trouble remembering what to do when you are using tan. I know it would be -sqrt(2)/-sqrt(2) over -sqrt(2)/-sqrt(2) but how do simplify that or is tan totally different

5. satellite73 Group Title

$$\frac{b}{b}=1$$ and $$\frac{b}{-b}=-1$$ it is one or the other

6. satellite73 Group Title

you are in quadrant 3, both sine and cosine are negative, so it is 1

7. anastar46 Group Title

oh okay I get it! what would I do if the values weren't the same?