Question

In triangle ABC, angle c=2 angle b= 2( angle a + angle b). Find the three angles.

Answer 1

In a triangle ABC

A+B+C= 180

MULTIPLY BOTH SIDES BY 2

2(A+B+C)= 360

2(A+B)+2C=360

2C+2C=360

4C=360

C=90

C=2B

90=2B

B=45

A=45