Question

ABC is a triangle such that
sin (2 A+B) = sin (C - A) = -sin (B + 2C) = 1/2
If A, B, C are in AP, then
a. A = 45°
C. C = 75°
b. B = 60°
d. None of these​

Answer 1

Answer:

Most probably the answer is C

Answer 2

Answer:

C= 75° IS THE RIGHT ANSWER