Question

The diagram below shows equilateral triangle ABC sharing a side with square ACDE. The square has side lengths of 4. What is BE? Justify your answer.

Answer 1

I can see how to do it using the Law of Cosines

Answer 2

and off-hand, I don't see another way (though in math there's always another way)

Answer 3

Well i am learning about that

Answer 4

Would i do them together or seperate

Answer 5

you concentrate on this figure: