Question Solved1 Answer12. A triangle is defined by the points $$A(0,1,2), B(1,0,2)$$ and $$C(-1,2,0)$$. Find angle $$A$$ of this triangle. (4 marks)

Transcribed Image Text: 12. A triangle is defined by the points $$A(0,1,2), B(1,0,2)$$ and $$C(-1,2,0)$$. Find angle $$A$$ of this triangle. (4 marks)
Transcribed Image Text: 12. A triangle is defined by the points $$A(0,1,2), B(1,0,2)$$ and $$C(-1,2,0)$$. Find angle $$A$$ of this triangle. (4 marks)