Question

angle ACD is an exterior angle of ∆ABC. angle B =50° , angle A =65° find measure​

Answer 1

Step-by-step explanation:

given, angle ABC = 50°

angle CAB = 65°

then, angle CAB + angle ABC + angle BCA =180°

65 + 50 + angle BCA = 180°

115 + angle BCA = 180°

angle BCA = 180° - 115°

angle BCA = 65 °

the correct answer is C = 65°