मराठी

Two Angles of a Triangle Are Equal and the Third Angle is Greater than Each of Those Angles by 30°. Determine All the Angles of the Triangle. - Mathematics

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प्रश्न

Two angles of a triangle are equal and the third angle is greater than each of those angles
by 30°. Determine all the angles of the triangle. 

उत्तर

Given that, 

Two angles are equal and the third angle is greater than each of those angles `by 30^@` Let x, x, x+30 be the angles of a triangle 

We know that 

Sum of all angles of a triangle is `180^@` 

`x+x+x+30=180^@` 

`3x+30=180^@` 

`3x=180^@-30^@` 

`3x=150^@` 

`x=150^@/3` 

`x=50^@` 

∴ The angles are x,x,x+30 

`x=50^@` 

`x+30=80^@` 

∴ The required angles are `50^@,50^@, 80^@` 

 

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पाठ 11: Triangle and its Angles - Exercise 11.1 [पृष्ठ १०]

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आरडी शर्मा Mathematics [English] Class 9
पाठ 11 Triangle and its Angles
Exercise 11.1 | Q 4 | पृष्ठ १०
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