Question

please solve this question ​

Answer 1

Answer:

Angle ABC=38°,Angle BAD=38°,Angle ABD=54°

Answer 2

Answer:

ABC=36°

BAD=36°

Explanation:

FOR THE 1ST ONE,

standing on the AOC is the same arc AC, AOC is the angle at the centre and ABC is the angle at the circle

we know,

angle at the circle=0.5×angle at the center

>ABC=0.5×AOC=0.5×72°=36°

FOR THE 2ND ONE,

BD=AC

>arc BD=arc AC

>angle subtended by arc BD=angle subtended by arc AC

>BAD=ABC=36°

I can't 3rd one