In a ΔABC, ∠A = x°, ∠B = (3x – 2)°, ∠C = y°. Also ∠C – ∠B = 9°. The sum of the greatest and the smallest angles of this triangle is
A. 107°
B. 135°
C. 155°
D. 145°
Answer:A
In a ΔABC, ∠A = x°, ∠B = (3x – 2)°, ∠C = y°. Also ∠C – ∠B = 9°. The sum of the greatest and the smallest angles of this triangle is
A. 107° B. 135° C. 155° D. 145°