Robert lives in Middleburg. He wants to find the distance between Easton and Westerville. He knows that Easton is 5.7 miles from Middleburg, that Westerville is 9.3 miles from Middleburg, and that the angle formed by the two lines (from Middleburg to Westerville and from Middleburg to Easton) is 69.4°. Rounded to the nearest tenth of a mile, what should Robert find as the distance between Easton and Westerville?

Question

anonymous · Answer

draw a picture

then use law of sines or cosines, whichever helps you solve the problem best