Question

Calculate the angles of a triangle ABC having 3 angle B = 4 angle C and the interior angle A =3/7 of exterior angle A.
Correct answer will be marked as brainlist.... Irrelevant answers will be Reported.... Please explain me briefly.....​

Answer 1

Answer:

<A=54⁰

<B=72⁰

<C=54⁰

explanation:

attached:)