Question

The angles of a triangle are in the ratio 3:5:4 calculate the size of each angle

Answer 1

The 3 angles in a triangle always add up to be 180.

Call the smallest angle as x
-> The 3 angles are x, 4/3x and 5/3x
-> 4x = 180
-> 45

So, the sizes of the 3 angles are 45, 60 and 75.