Question

What is the measure of angle A in the triangle

Answer 1

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Step-by-step explanation:

since all angles of triangle are 180°

=> (2x-10)+ (x+30)+ 70 =180

=> 2x-10+ x +30 = 180-70

=> 3x+20= 110 => 3x= 110-20

=> 3x= 90 => x= 90/3

=> x = 30

Now ,angle A =(2x-10)°

= (2(30)- 10)° ( since, x=30)

= (60-10)°

angle A = 50°

Answer 2

Answer :-

50 degree

Explanation :-
(We know that some of all ange in triangle is 180 degree)

A/q

2x - 10 + 70 + x + 30 = 180 degree

( After Solving L.H.S) :-

3x + 90 = 180 degree
3x = 180 - 90
3x = 90 degree
x = 90 / 3

x = 30

Measure of Angle A = 2x - 10

Hence,

2*30-10

= 50

[Therefore,
Measure of Angle A = 50 degree]

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