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# angle c = 3 angle b = 2 angle a + b  calculate a b c in linear equation in two variable Askiitians_Expert Yagyadutt
10 years ago

Dear keshav ..!

Just apply few concepts ..these are very easy questions ..

angle a + angle b + angle c = 180

angle a + angle b + 3angle b = 180

angle a + 4angle b = 180 ---------(1)

also ...2angle a + angle b = 3 angle b

angle a = angle b

Substitute in equation (1)  => 5angle b = 180  or angle b = 36

and hencle angle a = 36

and angle c = 108

Hope it is clear now ..!

Regards

10 years ago

let angle a be x° and angle b be y° then angle c will be 3y°

2(x°+y°) = 3y°                 -(1)

x° + y° + 3y° = 180°              -(2)

from (1) x=y/2

putting in (2)

y/2+4y=180°

9y/2 =180°

y =40° = angle b

x=y/2=20°=angle a

3y=120° = angle c