## JayDelV one year ago The point (−3, 1) is on the terminal side of angle θ, in standard position. What are the values of sine, cosine, and tangent of θ? Make sure to show all work.

1. anonymous

Hm

2. anonymous

Hm

3. JayDelV

Im confused

4. anonymous

Same hold on i've got someone assisting me

5. JayDelV

Thank you (:

6. anonymous

tan theta=1/3

7. JayDelV

My internet just got back up

8. JayDelV

i don't understand how he did this

9. Jhannybean

A terminal angle |dw:1439372268495:dw|

10. Jhannybean

So now we just use SOHCAHTOA to find sin: cos: tan:

11. Jhannybean

$\sf \text{ sin }\theta = \frac{opp}{hyp} \\ \\ cos ~\theta = \frac{adj}{hyp} \\ \\ tan ~\theta =\frac{opp}{adj}$

12. anonymous

use the Pythagorean theorem to find the radius, r²= x² + y²

13. anonymous

so now you just gotta plug in x and y from your point into the above formula