Question

In ABC, BC is produced to D. If ACD = 120º and B = ½ A,

then value of A is –––––––.​

Answer 1

Answer:

A=40

Step-by-step explanation:

We know that exterior angle =sum of non adjacent angles

ACD=A+B

$120 = a + \frac{a}{2}$

$120 = \frac{3a}{2}$

$240 = 3a$

A =80