Question

If a = 6, b = 5, c = 9 then angleA = ......​

Answer 1

Answer:

angle A=54°

Step-by-step explanation:

Let the three angles be 6x,5x and 9x.

6x+5x+9x=180°

=>20x =180°

=>x =(180/20) °

=>x =90°

Then,

6x=(6*9)°=54°

5x=(5*9)°=45°

9x=(9*9)°=81°

According to question,angleA=54°