Question

In a triangle ABC, angle c = 3 angle B = 2( angle A plus angle B) Find the angles​

Answer 1

<a +<b+<c=180

<a+2+3=180<a=180-5

<a=175

<a+<b

175+2

<a+<b=177

Answer 2

Answer:

A = 20° B = 40° C = 120°

Step-by-step explanation:

We know in a triangle,

A+B+C=180°

A+B+2(A+B)=180°

3A+3B=180°

A+B=60°     ..(1)

C=2(A+B)=2×60°

C = 120°

3B=120°

B = 40°

By Eq. (1)

A=60°−20°

A = 20°