Question

All of you are so hard hearted. You post spam and do not have the kindness to help even if you can... I am asking for last time anyone pl help...​

Answer 1

Answer:

Q 12.105°

Step-by-step explanation:

First construct a line through A to C. Then, the line will divide the angle into two eqyal parts- angle BAC=42/2=21° and angle BCA=108/2=54°. According to angle sum property of triangle, sum of all angles of a triangle =180°. Angle ABC + BCA+ BAC =180°.

Angle ABC+21+54=180°.

Angle ABC=180-54+21

ABC=180-75=105°.

Thats solved.