sebastianemiliogp sebastianemiliogp

02-05-2019
Mathematics

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∠1 and ∠2 are complementary. If m∠1 = 4m∠2, find m∠1

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jimrgrant1 jimrgrant1

02-05-2019

Answer:

∠1 = 72°

Step-by-step explanation:

Complementary angles sum to 90°, thus

∠1 + ∠2 = 90, substitute ∠1 = 4∠2 , thus

4∠2 + ∠2 = 90

5∠2 = 90 ( divide both sides by 5 )

∠2 = 18°

Hence ∠1 = 90 - 18 = 72°

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