It is simple. You gotta tally lengths:
From Pitagoras' theorem:
After simple transformation you should get:
And finally the answer you wrote.
Hi, I have a problem that is giving me trouble solving. The problem reads The vertices of a ABC are at the points A , B , C . If B = . find a relaionship between a, b, c and d. The book answere is . Can someone help me to fugure out this proble please thank you.