the angles of a triangle are in the ratio 5: 4: 3 How many degrees are there in the largest angle?
A
45
B
60
C
75
D
37.55
Correct Answer: 75
5x + 4x + 3x = 180∘⇒12x = 180∘⇒x = 15∘∴5x = 15∘×5 = 75∘