Suppose theta is an angle in standard position whose terminal side lies in Quadrant 2. If cos theta=-12/13, find the value of tan theta.

I just need walked through the steps, no direct answers please :)

Question

Suppose theta is an angle in standard position whose terminal side lies in Quadrant 2.  If cos theta=-12/13, find the value of tan theta.

I just need walked through the steps, no direct answers please :)

campbell_st · Answer

you should start be drawing a diagram 

|dw:1448389942944:dw|

find y using pythagoras' theorem 

and then you can find  the tan ratio

campbell_st · Answer

oops... I forgot 

|dw:1448390052556:dw|

haleyelizabeth2017 · Answer

It's tan theta=-5/12 right?

campbell_st · Answer

correct