agbontaen862 agbontaen862

13-08-2019
Mathematics

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∠a and ∠b are complementary angles ∠a measures 78°

What is the measure of ∠b?

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profarouk profarouk

24-08-2019

Good evening ,

Answer:

∠b = 12°

Step-by-step explanation:

∠a and ∠b are complementary angles ⇔ ∠a + ∠b = 90

Then ∠a =90 - ∠b = 90 - 78 = 12°

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