When the sum of the measures of two angles is 90°, the angles are called (а) supplementary angles
(b) complementary angles
(c) adjacent
(d) vertically opposite angles

(b) complementary angles

option B is correct

24: 56

step-by-step explanation:

24 can be divided into 3 and 56 can be divided into 7, where as all the other ratios can't.

  21.3

step-by-step explanation:

multiplying the given equation by c/sin(25°), we get

  c = 9/sin(25°) ≈ 21.2958 ≈ 21.3

we assume "c" is the length of ab, the side opposite angle c in triangle abc.