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MOST DIFFICULT MATH QUESTION IN THE WHOLE UNIVERSE

The distance from Wei to Mahdi is 12 feet and the distance from Wei to Lakshmi is 6 feet. A triangle is drawn connecting the positions of Wei, Lakshmi, and Mahdi. How far is Mahdi from Lakshmi if the angle marking Wei’s position is 88°?

13.6 ft

13.2 ft

13.3 ft

14.2 ft

Respuesta :

sqdancefan
The law of cosines applies. The distance (d) of interest is given by
  d² = 12² +6² -2*12*6*cos(88°) = 174.974
  d ≈ √174.974 ≈ 13.2 . . . . feet

The 2nd choice is the best.
  13.2 ft

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