Hey there!!
Remember :- In an isosceles triangle, two angles and two sides are equal. And the total sum of all the angles in a triangle is 180 degrees.
One angle of the isosceles triangle is 28°
Let's take the other two angles as ' x '
As the total sum = 180°, let's get this into equation
28 + x + x = 180
28 + 2x = 180
2x = 180 -28
2x = 152
x = 76°
Hence, the angles in the triangle are as follows:
28° , 76° and 76°
Hope my answer helps!