Hello. This is a problem from a book I'm studying on, I can't understand the solution.
"Find each segment formed by an inscribed equilateral triangle if the radius of the circle is 8"
R=8. Since , the area of is .
Also, area of circle O = .
Hence area of segment BDC =
These are my questions:
1.- Why is ?
2.And why is the area of equal to ? I know the area of a triangle is equal to , how do you get the height?