Task: Question Answering
Input (English): Problem: two ships are sailing in the sea on the two sides of a lighthouse. the angle of elevation of the top of the lighthouse is observed from the ships are 30 º and 45 º respectively. if the lighthouse is 100 m high, the distance between the two ships is :
Options: a. 173 m, b. 200 m, c. 273 m, d. 300 m, e. none of these
Output (English): c