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Find ‘x’, if: - Mathematics

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Question

Find ‘x’, if:

Sum
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Solution

sin 60° = `"Perpendicular"/"Hypotenuse"`

sin 60° = `(20)/x`

`sqrt(3)/(2) = (20)/x`

x = `(40)/sqrt(3)`

x = `40/1.732     ...sqrt3 = 1.732`

x = 23.1

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Solution of Right Triangles
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Chapter 24: Solution of Right Triangles [Simple 2-D Problems Involving One Right-angled Triangle] - Exercise 24 [Page 303]

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Selina Concise Mathematics [English] Class 9 ICSE
Chapter 24 Solution of Right Triangles [Simple 2-D Problems Involving One Right-angled Triangle]
Exercise 24 | Q 1.1 | Page 303
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