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angle c = 3 angle b = 2 angle a + b calculate a b c in linear equation in two variable

angle c = 3 angle b = 2 angle a + b  calculate a b c in linear equation in two variable 

Grade:12

3 Answers

Askiitians_Expert Yagyadutt
askIITians Faculty 74 Points
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

 

askiitians_expert

keshav kr
23 Points
10 years ago

ur answer is wrong plz improved ur ans 

sanatan sharma
26 Points
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

 

please approve the answer

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