Question

find x in each of the following​

Answer 1

Step-by-step explanation:

Given,

Three sides of a triangle are = x, x+10°, x-10°

∴ By the problem,

=> x + x+10° + x-10° =  180°     [∵Sum of three angles of a triangle are 180°]

=> x + x + x + 10 - 10 = 180

=> 3x = 180

=> x =  $\frac{180}{3}$

=> x =  60°

Hence the angles of the triangle are ,

x = 60°, x+ 10° = 60° + 10° = 70° , x-10° = 60°-10° = 50° (Ans)

Answer 2

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finding the value of x :

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(sum of interior angle of a triangle is 180°)

➟ x + (x + 10°) + (x - 10°) = 180°

➟ x + x + 10 + x - 10 = 180°

➟ x + x + x + 10 - 10 = 180°

➟ 3x + 0 = 180°

➟ 3x = 180°

➟ x = $\sf\dfrac{180}{3}$

➟ x = 60°

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finding the value of each angle :

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➥ x = 60°

➥ x + 10 = 60 + 10 = 70°

➥ x - 10 = 60 - 10 = 50°

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