If A, B, C are the angles of a triangle, then ^2 A + ^2 B + ^2 C - 2 A B C is equal to

MHT CET Mathematics question

If are the angles of a triangle, then is equal to

Answer: (B)

$ A + B + C = 3 - ( A + B + C) = 3 - (1 - 2 A B

Create a free account to read the complete working, and practise questions like this in a timed test.

Question ID VK-027098