What function is graphed below?

Two fire-lookout stations are 190 miles apart, with station a directly south of station b. both stations spot a fire. the bearing of the fire from station a is upper n 55 degrees upper e and the bearing of the fire from station b is upper s 60 degrees e. how far, to the nearest tenth of a mile, is the fire from each lookout station?

This question awards 100 ! i really don’t want to fail i will also mark you !

If value of cos330° is √3/2 then find tan165°.