Question

The angles of triangle are (x + 10 o), (2x – 30 o) and x o. Find the value of x. ​

Answer 1

Answer:

the value of x is 5

Step-by-step explanation:

x+10+2x-30+x=180

4x-20=180

4x=200

x=5

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Answer 2

$\angle{1} = (x+10)$

$\angle{2} = (2x-30)$

$\angle{3} = x$

By Angle sum property of triangle

$\angle{1} + \angle{2} + \angle{3} = 180^o$

$(x+10) + (2x-30) + x = 180^o$

$x + 2x + x + 10 - 30 = 180^o$

$4x - 20 = 180^o$

$4x = 180^o + 20$

$x = \dfrac{200^0}{4}$

$x = 50^o$