the three inside angles (A, B, C) of a right angled triangle are in the ratio 7:18:11. The smallest angle is 35 degrees. Work out the angle A, B,C

sum of interior angles of a triangle = 180
ratio 7:18:11 
so
7+18+11 = 36

180 / 36 = 5

7 x 5 = 35
18 x 5 = 90
11 x 5 = 55

answer
measures of right triangles are 35, 90 and 55