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If Two Complementary Angles Are in the Ratio 1 : 5, Find Them. - Mathematics

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Question

If two complementary angles are in the ratio 1 : 5, find them.

Sum

Solution

Two complementary angles are in the ratio = 1 : 5

Let these angles be x and 5x

∴ x + 5x = 90°

⇒ 6x = 90°

⇒ x = `(90°)/6` = 15°

∴ Angles will be 15° and 15°× 5 = 75°

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Concept for Pairs of Angles
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Chapter 14: Lines and Angles (Including Construction of angles) - Exercise 14 (A)

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Selina Concise Mathematics [English] Class 7 ICSE
Chapter 14 Lines and Angles (Including Construction of angles)
Exercise 14 (A) | Q 15
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