Problema Solution
Two ships leave port, one traveling in a straight course at 22 miles per hour and the other traveling a straight course at 31 miles per hour. Their courses diverge by 38°. How far apart are they after 3 hours?
Answer provided by our tutors
according to The law of cosines
the one side of the triangle is 66 and the another is 93
the Angle is 38
so d^2=93^2+38^2-2*93*38*cos38
=67.25