if a triangle has a perimeter of 72 and a ratio of 3:4:5. what is the length of all three sides and angles

Answer 1

3 x + 4 x + 5 x = 72

12 x = 72
x = 6

so
18
24
30

3,4, 5 is a right triangle
for the other angles
sin A = 3/5
sin B =4/5