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Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 7

Two angles are in the ratio 11 : 25. If they are linear pair, find the angle - Mathematics

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Question

Two angles are in the ratio 11 : 25. If they are linear pair, find the angles

Sum

Solution

Given two angles are in the ratio 11 : 25.

Let the angles be 11x and 25x.

They are also linear pair

∴ 11x + 25x = 180°.

36x = 180°

x = `(180^circ)/36`

x = 5°

∴ The angles 11x = 11 × 5° = 55° and 25x = 25 × 5° = 125°.

∴ The angles are 55° and 125°.

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Chapter 5: Geometry - Exercise 5.6 [Page 105]

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Samacheer Kalvi Mathematics - Term 1 [English] Class 7 TN Board
Chapter 5 Geometry
Exercise 5.6 | Q 4 | Page 105
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