Question

How would I do this problem? The measure of the angle S = 21 degrees, the measure of arc RS = 100 degrees, and RU is tangent to the circle R. Find the measure of angle U. The figure is not drawn to scale.

Answer 1

find angle R, and use triangle sum property to find angel U

Answer 2

How would I find R?

Answer 3

let O be the center.

RS = 100, that would make angle ORS = 40

Answer 4

R = 40 + 90 = 130

Answer 5

29?

Answer 6

Yes !