Question

ans. it. .............

Answer 1

hey mate!!! here is ur ans.

nd don't forget to mark as brainlist plz...

Answer 2

Answer:

The measure of ACB is 70°.

Step-by-step explanation:

Given information: The angle subtended by the chords AC and BC at the center are 130 and 90 degree.

The measure of complete central angle is 360 degree.

The angle subtended by the chords AB at the center is

$\angle AOB=360-90-130=140$

According to the central angle theorem, the angles subtended by the chords at the center is twice of the angle subtended by the chords on the circle.

$2\angle ACB=\angle AOC$

$\angle ACB=\frac{\angle AOC}{2}$

$\angle ACB=\frac{140}{2}$

$\angle ACB=70$

Therefore the measure of ACB is 70°.