Question

Find, correct to the nearest degree, the three angles of the triangle with the given vertices.
A(0, 1, 3), B(-2, 4, 5), C(1, 4, -3),
∠CAB = °
∠ABC = °
∠BCA = °

Answer 1

http://math.stackexchange.com/questions/361412/finding-the-angle-between-three-points