3 + (5 + 7) please help me

The number of possible solutions of a polynomial can be found by looking

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?

Can (2,3 and square root 10) be sides ona right triangle?