Step-by-step explanation:
Hello! Remember you need to write complete questions in order to find good and exact answers. Here your question is incomplete so I could help you in a general way. Recall that two angles are complementary if and only if they add up to 90°. So, if we have to angles, namely:
∠A and ∠B
And angle ∠A = 35°, then this is complementary to ∠B as the following form:
∠A + ∠B = 90°
∴ 35° + ∠B = 90°
∴ ∠B = 90° - 35°
∴ ∠B = 55°
Finally, ∠A and ∠B are complementary because they add up to 90°