3 years ago

Angle A and angle B are complementary

Mathematics

1 answer:

Nikitich [7]3 years ago

4 0

Answer:

Step-by-step explanation:

∠A + ∠B = 90° {given they are complementary}

5x+ 15 + 30 = 90

5x + 45 = 90

5x = 90 - 45

5x = 45

x = 45/5

x = 9

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