Asked and answered elsewhere.
https://brainly.com/question/10257678
Angle C is 36°.
Angle D is 54°.
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The total of complementary angles is 90°. The total number of "ratio units" is 2+3=5, so each "ratio unit" must stand for 90°/5 = 18°. C = 2*18° = 36°; D = 3*18° = 54°.