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If an angle is eight times its complementary angle, then the measurement of the angle is1. 20º2. 40º3. 80º4. 60º |
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Answer» Correct Answer - Option 3 : 80º Given: An angle is eight times its complementary angle Concept used: Two angles are said to be complementary angles if their sum is 90º Calculations: Let the required angle be y Hence, its complementary angle is (90 − y) ⇒ y = 8 × (90 - Y) ⇒ y = 720 - 8y ⇒ 9y = 720 ⇒ y = 720/9 ⇒ y = 80º ∴ The measurement of the angle is 80º |
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